You guys will love B. Shores! Just keep in mind that you will be about 10 min. by boat or water taxi from down town. About 30 min by golf cart, add time for stop at Palapa bar or nighttime driving.
Carnival was cool, the kids go around and paint EVERYTHING and EVERYBODY.
We were there about the same length of time and just enjoyed the Caye, fishing and snorkeling.
I think I'd do the cave tubing next time...but am so glad we took the approach we did.
My reports are obviosly date (sorry Pedro1), but start here... http://ambergriscaye.com/cgi-bin/ultimatebb.cgi?/ubb/get_topic/f/4/t/008306/p/1.html
Use this board wisely, use it's search functions, and you'll have the time of your lives.
PS let me know if Graham "primo" is still at B. Shores...