tnt: as for the big group deal I wouldn't worry at all. I went down there for first time 2 years ago with my (now Ex) gf. Last year went solo, and this year again in Dec. Every year meet great new people I still keep in touch with, and get to hang out with the insane ones I already know. Easiest place I've ever been for talking to new people. On the packing note, I travel every weekend for 9 months for work so have it down to an art, but I tend to go overboard in Cancun. The most used items in my bag are advil, bathing suits, and the floating beer pong raft. I'll have some clothes that never get used because I never leave the resort(or the sexy pool bar for that matter) and/or drink my way straight through dinner reservations. Early December we have a real fun repeat crowd going, but from talking to everyone on here, I don't think there's really a bad time to go down.
lots of personals, lots of lingere, i like to bring a fedora to wear with sexy clothing, special underwear and fishnet stockings,,,,,,you name it