Phew! Glad also there's a positive post instead of all the negative ones.
I'm off to Jamaica for my 12th or 13th time - lost count lol - next week. I absolutely love it! Have made lots of friends there who I hang out with every time.
The island is stunning, mountains, lush vegetation, waterfalls and great beaches. The locals are lovely. I've met a load more kind and friendly people than occasional grumps. Yes, you do get hussled (high unemployment and no social security) but a friendly no thanks and walk on will suffice.
I've been all over the north coast up to Port Antonio, it's beautiful there with the Errol Flynn marina a nice relaxed place to hang out.
You can go to Firefly, where Noel Coward lived and is buried, the Queen mum even visited it. Nearby around Oracabessa is where Ian Fleming lived and wrote the James Bond books. James Bond was actually an ornithologist who wrote a book about birds of the Caribbean.
Talking of which you've got Rocklands Bird Sanctuary outside Montego Bay (Mobay) where you can feed hummingbirds, it's amazing.
In Mobay you can also go horse-riding in the sea!
If you go to Negril - of Rick's Cafe fame, go before sunset to see the cliff divers, check youtube - there is a 7 mile beach. It's great, just people watching, reading and lying on a beach bed drinking cocktails - bliss. Live reggae on the beach at night. I saw Bunny Wailer there, he was amazing.
Sunsets are stunning there. Negril is called the Capital of Casual 
It's lovely going south from Negril along the coast down in Westmoreland, Peter Tosh Mausoleum - I met his mum! RIP to both - and there's a lovely place to stay down there Sandals Whitehouse European Village (pricy) and on the south coast you've got laid-back Treasure Beach with a trip to the "best little bar in the Caribbean" Floyd's Pelican Bar, out in the ocean on a sandbank.
Also round there inland you've got Appleton Rum Estate who do tours and YS Falls for a dip.
I've never had a problem in Jamaica, know people who've been in Kingston and even into Trench Town and didn't hear of anything untoward.
I know someone who's amounts of visits to Jamaica are in the high seventies! She does live in USA tho so a lot closer. I also know Americans who are living there.
I hope you don't get put off by the negative posts on here. You may well miss out on an amazing time.