I chose my resort! It's the Platinum Yucatan Princess; the adults only resort beside the Grand Sunset/Riviera Princess resorts. I just thought I'd post since I didn't see many forums about this resort since it's fairly new.
It's everything that I wanted in my checklist; a sky terrace , disco, close to Playa del Carmen. Just booked our ceremony to be on the terrace since I didn't want to have a beach ceremony.
I'm at the beginning stages of planning so I'll probably post more once I know more about the details in the weddings that are conducted there.