Hi Maritza, I was originally planning my wedding with Azul Beach but two and a half months prior to our wedding they started acting funny and my TA discovered that they were overbooked and weren't going to be able to accommodate our entire group (about 50 people and this was off-season). They came back to us and wanted to move some of our guests to their sister hotel Azul Sensatori. We were furious since we absolutely did not want to spllt up our group. Thankfully our TA was able to cancel the contract and rebook us at Ceiba. Needless to say I was completely freaked out about re-planning a wedding in 2 months, and more than a little concerned about the lack of night life there, but it was positively the best thing we did! If your group likes to party, trust me it will be a party every night! We did a bonfire on the beach one night which was a lot of fun, and the penthouse patio is a great place for after hours drinking, it really is what you and your guests make of it. Good luck with your planning!
ps: we invited 120 people and only expected about 30, we got 47. More people than you think want a good excuse to go to Mexico!