I just got back from my trip to Ambergris Caye with my group of 10 and had a great time. I want to thank everyone who's contributed to this thread for the advice and recommendations, because it made life very easy down there.
Ramons Village was a great place to stay--with the exception of water pressure in the shower--and everyone was extremely nice. I wish I could move Estel's and the water to OKC and sit there every morning--best bloody mary anywhere. We took the $25/cab ride to the municipal airport to save on the flights, and it was about as easy as it gets getting there and back for half the price of the international airport to San Pedro.
There were hardly any tourists there, so it kind of felt like it was our own little resort town for the few days--my only regret is not staying longer, and I didn't take on the Mayan ruin tours. Once again, thanks to everyone for all the help and trip reports!