Pretty much sure my gf and I will be going...my vacation is approved and she should be able to confirm in a couple days. I sure hope there are spots for the cenotes left!
Update: just booked with Al including a few extra days and a couple secrets I wont tell her about (suite upgrade and 1st class flights if we can get free upgrade on points) since she doesn't read any forums

Thanks to all who worked to put this together...it's going to be a fantastic trip!