Bahamas
I had the opportunity to dive the Bahamas in the Summer of 2009.
By far the highlight of my diving was doing a shark feed with Stuart Cove. This dive offered a chance to swim with, at times, 30+ Caribbean reef sharks - which is a truly adrenaline filled experience. That said, at no time did I feel unsafe. Doing this shark dive is something that I would highly, highly recommend.
The diving in the Bahamas is suitable to all experience levels. The water is warm and clear, and there was little to no current on the dives that I did. While the highlight for me was the shark diving, the other dives that I did (albeit only a couple) were enjoyable - the life in the shallows was healthy and abundant.
Topside, the weather was always warm, though we did experience one heavy storm in the week we were there. As far as topside activities goes, the Bahamas has a well developed tourism industry with plenty to do for all ages.