If you are looking in the carribean you should check -
1. Beaches - Turks and Caicos - awesome family fun
2. Iberostar Bavarro Suites - Dominican Republic, Punta Cana - great family place
In the US maybe consider
1. Sandpiper - Florida
All of the above have available babysitting and kids camp.
When we go to them we utilize the babysitting at night so we can have some adult time AFTER the kids are already asleep. And we use the camp for maybe an hour a day so we can do somethings that simply cannot be done with the kids.
YES, I go on vacation with my kids to spend time with them, but 24/7 is difficult and makes a "vacation" less like being away somewhere and more like just taking time off of work and staying home and doing day trips.
Just some thoughts. Good Luck
btw - We will be at the Iberostar at the end of Feb!