I would say the lobby bars or the hacienda. The hacienda will have live music eventually, but I think it's later. So you're better off at the lobby bars for a couple hours. They will most likely have live music going on earlier. Your wedding is coming up SO quickly! And I'm glad you finally confirmed everything. Yeah, a beach reception is really not a great idea. The beach isn't really flat in this area, it's really dark, depending on time of year there are bugs that come out on the beach at night, and the wind will get sand on all your food. At first I wanted a beach reception too, but after being told that and then having the poolside reception, they were right. The poolside was far better. Most private = Coba. Space to move around = Akumal. Most go to the Hacienda... or to bed!