Ok, this could be long 
Restaurant Recommendations
Barbados can be quite expensive, especially if you want to eat at the higher end restaurants. Thankfully there are also some cheaper alternatives which are definitely worth a visit. Most of the better known restaurants/rum shacks etc are in Holetown or on the south coast so you'd either need to hire a car or taxi/bus. Taxis would obviously get quite expensive so I guess it depends whether you'd both want to have a drink at night as to whether you drive or just rely on the buses/taxis. If you're happy to pay for the taxis (I can recommend a fab, reliable & safe driver) you have to make sure you agree a price before you take the journey (& also make sure you check whether the price they quote is in in either bajan or US $ otherwise you might get ripped off).
My posher restaurant recommendations:
Lone Star - gorgeous for both lunch & evening meals. Variety of food options. Located on Alleynes beach which is beautiful & a great place to watch the sunset. High end but feels less stuffy than some if the other posher places!
Cin Cin (pronounced chin chin) - further down the west coast but worth a trip. Quite modern & along the lines of Cliff & Tides. Nice to go for cocktails in the air conditioned modern bar before earting on the outdoor terrace.
Cliff Beach club - cheaper sister restaurant to the Cliff. Same stunning views & lovely food (portions are pretty big) but cheaper & more informal than the Cliff.
Other options
Cliff - probably seen as the #1 restaurant on the island & definitely has the wow factor & is an experience, but it is very expensive & other restaurants serve food just as good. It's a set price menu for 2 courses so you can't just opt to have a main course. If you're willing to pay the price, try to email & book asap to see if you can get a railside seat so you can see the stingray from your seat, & arrive early to have a drink in the bar & watch the sunset.
Tides - refurbished a year ago & probably on a par with the Cliff but not quite as expensive cos you don't have to have 2 course. Another beautiful restaurant which I've been to many times, however the last few times I feel the food & service hasn't been quite as good (we didn't go this year). But if you look at Trip Advisor there's many positive reviews so if you like the look of the place/menu, don't let me put you off.
Fish pot - this is the restaurant at your hotel & as the name would suggest, it serves a lot of fish. I've been here twice, for both lunch & dinner & I wasn't hugely impressed either time. The food was ok (some people in our party thoroughly enjoyed what they ordered) but the service was poor to mediocre on both occasions. Again, as it's the restaurant attached to your hotel, I'm sure you'll try it & hopefully you'll have better luck than we did.
Not so posh recommendations:
Carizma on the Hill - located at Sugar Hill Resort. Run by a lovely couple from Bolton (who also own Cafe Bar Carizma below). Lovely restaurant away from the beach but with stunning views of the west coast, ideal at sunset. They do a really affordable BBQ on a Saturday night with music, a Sunday lunch (not my cup of tea in Barbados but apparently delicious) & other lovely food with occasional live music.
Scarlet - not on the beach, in fact it's a building with no windows at all but don't let that put you off. Variety of food but really lovely & delicious cocktails.
Cafe Bar Carizma - one of my favourite places on the island. Run by the same people that run Carizma on the Hill. Small cafe in a chattel village in Holetown which is open for delicious breakfast & lunches but on Tuesdays & Thursday evenings they have a tapas night with a live band (1359) who are fab. Bit cheaper than the high end restaurants but great food & less stuffy than some of the bigger restaurants. Quite small & gets very busy so book in advance. (Sometimes only open on Thursdays if the islands quiet so also double check that)
Santi - my fave beach bar run by a Huddersfield lady & her bajan hubby which does lovely food. Relaxed atmosphere. They have a quiz night which is a lot of fun on a Monday night (try the curry) & the same band from Carizma play on a Sunday. It's located on one of the best beaches in Barbados (next door to Lonestar) & they rent out lovely beach loungers (think you get your money back if you buy food) & there are often turtles swimming not far off shore, so worth going for a few hours.
Pepenero & Lemongrass - located in Limegrove Shopping Centre in Holetown. Italian & Thai restaurants next to each other. Both serving reasonably priced delicious food & they share the same kitchen so if you went to the Italian & ordered Italian but your hubby wanted Thai, that's no problem. Also there's an Asian restaurant on top of Limegrove which is supposed to be nice but I've yet to try it.
Elbow Room - in Holetown, hot stone restaurant where you order your meat or fish & cook it on a hot stone yourself, great if you like steak, nice food & a bit different.
We very rarely eat on the south coast but we have tried a few restaurants.
Champers - we had lunch here & it's probably the high end restaurant on the south coast. It was nice, but there are nicer in Holetown which is closer to where you're staying.
Cafe Luna - rooftop cafe of the Little Arch Hotel. Again went for lunch which was delicious, supposed to be gorgeous at night as it's a rooftop restaurant so you can dine under the stars but we haven't tried at night.
Oistins - this is the local fish fry, popular with locals & tourists. Really busy on a Friday night, less so on Saturdays, but open most nights. Lots of small restaurants in one largish area. Cheap but delicious food (if you choose the correct restaurant - our fave is Uncle George's but think Pat's Place is also supposed to be good). Sells local catches of the day, with sides like macaroni pie, rice & peas, rum & local beers & there's a market on Fridays & music & a really bad karaoke on Saturdays!!! Again it's on the south coast & can take a while to get there on a Friday night. There is another fish fry at Moontown which is closer to you & supposed to be good, again on my list of 'to do's'.
Excursions
Huntes Gardens - a beautiful tropical garden created by a very eccentric Englishman Anthony Hunte (think the willy wonky of the horticultural word). Well worth a trip, hard to describe but breathtakingly beautiful. Gets very hot at the bottom so take water. And also have a drink with Anthony on the veranda afterwards to hear a bit of the history. And if like me you're not into Gardens, it's still worth a visit!
St Nicholas Abbey - combine this with a trip to Huntes Gardens & the east coast. They make their own rum so you can get a tour of the distillery & a bit of history about the abbey. Again, worth a trip (& you can buy some of their rum)
East coast - combine a trip to the above with a trip to the east coast. Poles apart from the calm west coast, surfers paradise (not suitable for swimming) but stunning scenery.
Catamaran - we use Silver Moon which has only 12 people on board so it's really spacious. They do lunch cruises (& adult only options on certain days) with delicious food & take you to snorkel with turtles & off a reef & into a quiet bay to moor for lunch. They also so sunset cruises which I've not done. There's also a catamaran company called Good Times which go from the west coast (you have to travel to Bridgetown for most of the cats) & I've heard they're good but haven't used (& they have more passengers on board)
Horse Racing - if you like horse racing (or even if you don't it's Experience) every other Saturday at Garrison Savannah near Bridgetown. Worth going to for the atmosphere. Sit in the stand with the locals. Cheap as chips, you can bet if you want & soak up the crazy atmosphere.
Harrison's Caves - interesting experience, worth a visit especially on a rainy day. Caves aren't really my sort of thing but really enjoyed the trip.
Concorde Experience - really interesting history of Concorde & its visits to Barbados. Great place to visit on a rainy day (or for an hour or so if you're on the south coast even if it's not raining)
Animal Flower Caves - supposed to be beautiful (at the very north of the island). Have yet to visit as Tropical Storm Harvey hit the island the day we were going to go.
Speightstown is the closest 'town' to where you're staying. It's very old Barbados, few nice places for lunch & few nice rum shacks.
If you decide to hire a car, you can arrange it either before you travel or while you're there. We always use Stoutes who are great (maybe not the cheapest but definitely reliable & good safe cars). Sometimes it's best to pre book if you know when you want the car, but I don't think the island is too busy in November so you'd probably be ok to book when you get there (just check before you go what documentation you need to take with you). You could hire for a few days & make the most of having the car to do the trips rather than hiring for the entire stay. They drive on the left in Barbados & hire cars are marked with an H on the number plate so drivers are really courteous & will beep their horn to let you out. The island is also pretty small so it's hard to get completely lost, take a map & explore. The last couple of times we went, we didn't hire a car & just used our friend who's a taxi driver. We decided we were paying too much for car hire when we didn't use it every day, plus taxis on top of that so everyone could drink at night, so we decided it was more economical to get buses during the day (very very cheap & frequent) & taxi at night or if we wanted to do trips.
They import a lot of stuff into Barbados so that's part of the reason things get expensive. If you're self catering (I think some of the rooms at LGH have basic kitchen facilities) it might be worth taking basic supplies if you have room in the luggage if breakfast & lunch aren't included. Teabags/coffee/sweeteners, marmite, snacks. The best supermarket for supplies is Massys but the one in Holetown is currently being re built. It's supposed to open on 4th November but when I left last week that didn't look likely (Barbados time is unlike any other time). If it is & you want to stock up on food & beers / rum, go there cos it'll be fab once opened. If not, the closest Massys is quite a distance from you so either pop in on your travels if you hire a car (it's at an area called Warrens), or use Jordan's Supermarket in Speightstown to stock up (not as good as Massys but better than travelling to Warrens)
Take a brolly, a small torch (it gets dark fast at about 6.30) insect spray & bite cream & plenty sun cream cos it's expensive over there. Also, don't look at the forecast on your phone & freak out if it says rain. The couple of times I looked before we went this year it said rain, rain, rain every day & even when I looked while we were there, the forecast was rain (apart from the actual days I was looking when it gave a more accurate forecast for the day). The reality was that for the 3 weeks I was there, it rained on a couple of afternoons for a few hours but then got nice again about 4pm, a few nights it rained a lot but was beautiful by morning & a few days we had a few welcome clouds/short showers to cool the place down.
Can't think of anything else I haven't covered so if you've got any more questions about what I've posted or anything I haven't, shout up. Happy planning.