Just adding my vote to centerparcs. I don’t have grandparents to leave my monsters with either! We discovered centerparcs too late really — tried the usual suspects when the kids were little: uk beach holidays (cold & wet), a cruise round the med (hair raising, kids always seemed to need a poo just when we had to get the last port bus back to the ship… and really, 3 and 7 year olds are not interested in European cities), camping (never again) plus went on holiday with other families (diplomatic eggshell territory) before I despaired and booked a midweek break to Sherwood.
My god it was a revelation. Every restaurant has a little soft play, colouring sheets & crayons, Ella’s fruit pouches and some have robots which deliver your food. There is a play park round every bend. Kids can scoot and cycle safely, and there is big sandpit beach next to the lake (with a coffee shop next to it) so they can paddle and dig while you sit. And the kids loved the swimming. That’s before you pay for extra activities.
We actually could relax. We payed the equivalent of a trip to a French vineyard in tokens for the slot machines in order that my daughter could win things available in Poundland, but the kids were happy as Larry. We went out for pancakes, swam a lot and did the slides/flumes, self catered (ping food mostly) ate a couple of meals out and bought chips and doughnuts. We did activities but not every day; the indoor climbing is great as it is next to Starbucks 😉, and if you book a swimming class like aquajets first thing, you can pick up a coffee on route, take a book for that hour then you are in the pool first when it’s quiet. We mostly stayed in the cabin in the evening and put the log burner on, kids were pretty zapped and we let them have the room with the tv in it as they don’t have tv in bedrooms at home, so they nodded off in front of a film. And we opened the Prosecco.
Also I organised with hubby that I would get the kids up and out most mornings and he would meet us at the pool after a lie in, in return I got an afternoon to myself at the spa and a massage. He took the kids to eat chips and play air hockey/football pool (both convenient for the bar…)
We’ve tried 3 centerparcs and think Sherwood is best, it’s flat, and the pool, sports centre and shops are all quite central. Longleat is beautiful but it’s also harder work with little ones as very steep and spread out across an inconveniently long, narrow site. You have to be careful at longleat not to book accommodation which means walking miles to the pool or humping a buggy up several flights of steps. Woburn also quite steep, but compact, so nowhere is far to walk.
Hope you find something that works for you x