Suggestions on Hilton properties in Caribbean?

Hello~

Summer is over, which means its time to start planning our winter escape (most likely end of January)..
Will be traveling with wife, almost 2 year old, and 8month old..

I have points with .Hilton / Marriott / SPG and looking for a destination that will:
* Be on a great beach
* Be all inclusive / have a meal plan available /or at least be realistic on meal prices / options
* Have something for the kids: lazy river, multiple pools, maybe a water slide I can take them on
* Have everything we need on property, or be close enough to shops / town where we can walk - this would be great if non all inclusive for other meal options / change of scenery too

We went to Hilton Rose Hall (Jamaica) last year and were pleasantly surprised..
Have also been to: Negril, Aruba and multiple Gulf coast Mexico destinations..
Ideally looking for something new..

Thus far, some considerations have been:.
- Grand Cayman, Ritz - however I know, even though I can transfer points for Marriott gift cards, food costs will be through the roof

- St. Thomas 5 days at Frenchman's reef,.
then 5 days on St John at Westin - concerned about locations of both properties, kiddie things to do, and food costs.

- St. Kitts - have heard fair reports about the Marriott here

Any additional suggestions, pointers, or thoughts on the above would be Greatly appreciated!

Thanks!!