We are also booked at the Paradisus Cancun for July 5, 2014 which is coming up soon. I've done a ton of research and will share what I have
We have 30 people and are going with the Chill Out Chic package. There is so far good and bad with the hotel so far.
We booked with Paradisus because their beautiful beach, good reviews, and location. We booked a beach reception and then was told after we put our deposit down that we would have to end it by 9pm because the turtle mating season We found this a bit too early to end the reception so asked if we could extend our reception somewhere else (with a fee of course), but they were not very accommodating. They said that we would have to change our reception location altogether, which was really disappointing because I've always dreamed of dancing under the stars on the beach at my wedding
So we then asked for alternatives and for pictures of other locations. We just kept getting the ones that are on their romance location package which I find is not much help at all....moving on now....
We are now considering La Perla as well. Again limited pictures from the hotel BUT if you Google "Gran Melia Cancun weddings" which was the former hotel name to Paradisus Cancun (changed over in late 2012), then you will find some better pictures and even a few videos of the hotel (and pretty sure that it's La Perla in some of those weddings to give you an idea ).
Pros about La Perla is that there is no need to rent additional lighting or a dance floor if you want that. On the con side, it looks pretty big and that means expensive to decorate! If you are looking for draping for the restaurant which we are, it starts at $1500 and that's of course not including any other flowers or any other décor.
In terms of the outside vendor fee, I found it extremely ridiculous as well. One way around it is to book a 3 night stay for them instead (still ridiculous but less than $1000). We didn't bother with that and we are booking with one of the photographers there Sweet Caribbean Photography. They seem very pleasant and very good to deal with! If you go to their website as well, you'll see some photos of the hotel in general.
There was a little bit of venting in there but hope some of the info was helpful to you.
I'm totally interested in your experiences and planning tips as well. Please share