We are getting married at EDR in November, a sister resort to Azul, and they have the same wedding packages. We have most of our "extras" decided. We are expecting around 46 guests as of now.
We went with the free package with a symbolic ceremony. It includes the very basics for the ceremony, a group reservation in a restaurant (we are using it as our welcome dinner), and not many other "frills". We decided to spend more $$ on our room vs. their buy-up packages, because we just felt like the $$ for the buy-up packages wasn't worth the add ons - we weren't planning to use most of them anyway. The free package also comes with a special menu breakfast in bed and a private dinner on the beach for you & your groom (either can be used any time during your stay!). I think there's also a couples' massage lesson, the separate groom's room for him to get redding the day of the wedding, decorating your room on the wedding night, and a few other romantic touches.
We are adding:
--wooden aisle runner
--hair rehearsal & wedding day style for me (bride)
--wedding day hair style for my mom (also offered to my FMIL, but she declined)
--private dinner/reception - we went with the pick & choose menu
--pro amplifier for our iPod for reception
--smallest cake for cutting ($60)
A lot of brides also do the sheers at the gazebo and the flower arrangements for the gazebo.
I will be bringing sheers for the chairs, paper lanterns for aisle, gazebo & reception decorations, table runners for the reception tables, and other reception decorations with us. I'm also doing a real touch bouquet for myself, corsages for the ladies in our family, and bouts for the guys so we didn't need those from the resort/Lomas.
Overall I am focusing on the beautiful setting of the resort, and keeping the decorations personal, yet fairly simple (and transportable!!). And affordable... and assuming the amount of booze available during the reception will ensure it'll be quite the bash!
Hope that helps with some ideas. Good luck with all of your planning!