We just got married in Negril at Cocolapalm in November. I called the hotel a couple of months in advance and other than me having to fax down some documents I didn't have to do a darned thing.
I was fortunate enough to have a friend that is a hairdresser and another one that is very good at taking pictures so didn't have to worry about that part.
The hotel made everything abolutely fabulous and took such great care of the wedding details and our guests. I have no idea where they got the flowers or the cake from, but they were gorgeous.
I guess I'm not really offering any help here am I
My suggestion, let the hotel look after all the details so that the bride and groom and their guests don't have a worry in the world and that all they have to do is enjoy their time in Negril!