Go with the Devine package!!!! you get a better option for food and more upgrades. My fiance and I were luckly enough to fly down there last year to see it in person, we didn't want to take chances of just seeing pictures.
We didn't want to go with their photographer, personally I didn't like them at all. We had a chance to see two weddings while we were down there. Pilar and her crew does an amazing job!! even things that need to be changed last minute.
If you are still looking for a photographer I highly recommend Citalli Rico! We had a chance to meet her and see her work while we were down there. Her's her blog so that you can see her work. She has won a lot of awards! She is based in Cancun and has done a lot of weddings!
Since we are having our own photograher Pilar gave me credit for other things like upgrading my chairs to Tiffany chairs instead of the regular chairs.
As far as flowers I say stick with them because they charge you a fee of $350 for outside vendors and it's totally not worth it!
You will have a lovely time, the resort is beautiful and everyone is so friendly and even though its been almost a year since I've been there i have complete faith in Pilar to get everything done. Make sure you email her at least a month out and let her know when your guest are arriving and every detail about your cake and flowers. She will try to get it as close as possible.
If you have any other questions please let me know!