Yeah, pictures are of one area of the lobby terrace. there are 2 of them, but very similar.
Here is a picture of the beach area for the wedding. My only concern about that place is that on the right hand side of the wedding place, as you look to the ocean, there was some ugly fence and house. Unfortunately I did not take a good picture of that since I knew I was not going to get married there, but when I go next time I will take a picture and post it here. You can see a little bit of what I am saying on the right of the picture. I guess with good decorations people will not notice that though.
I think the lounge area is called "The lounge area" . It is at the bottom of the lobby terrace on the side where those stairs come down (there is a picture posted by another bride here with that area). It is really really nice. We spent our evening there and enjoyed it very much with some margaritas while listening to mexican music. Other people were dancing.
There is also a sports bar that is open till 6am and it has a disco area where people can dance. When we went there the place was quite quiet but I assume when you go with a bunch of people you can have a good time and get the DJ to play some dancing music.