Hello Mirnitap!
I will recommand you Palladium! They offer really nice packages (most of them are for 20 pers but you can pay for each extra person). You can also pay an extra and have a private reception! I saw the wedding planners working and they are really professionnals.
The resort in general is beautiful!!!!! I've been to the Grand Palladium Jamaica and in Mexico. The food is amazing, great entertainment in the night, also a good place if you have kids. I'll recommand you this Resort! Have you an idea of the destination?