I am having my wedding at La Amada in Feb, 11. We went to visit this past June and the resort is beautiful! It's very contemporary and sleek, which is just my style. The service was unbelievable, the food was really good (which is never the case at an average all inclusive) and I'm a foodie so it's very important for me to have great food at the wedding.
We wanted a small hotel that wasn't all inclusive as I just don't like them. I hate mega resorts with tons of people and wanted something intimate and classy, which is the case at La Amada. The rooms are reasonable, the lowest at $245 a night with breakfast and that's in the heart of the high season. The higher end rooms are awesome, they have a large terrace and their own plunge pool.
The resort is fairly isolated, there really isn't anything immediately surrounding, though Cancun is a short taxi ride away so easy for people to make day trips to their markets & restaurants. That being said, there really aren't bar/restaurant options right out your front door which might be a problem for you. They do have a concierge that can help with organized tours, etc if you need that and the resort is right on a marina, so water sports, boat rides are all right there.
The food and drink prices are on the high side, but if you have a lot of guest that aren't big drinkers, then it's a better deal than an all inclusive.
I guess that's it for now, feel free to ask me any specific questions. We're planning on going back in Oct/Nov to pick the menu and settle the rest of the details.