Hello Julie,
I'm also getting married at the Riu Cancun in June 2011(hot lol).
I've been to Riu Cancun a couple of years ago. Super Awesome!!
Have you booked already? I'm just figuring out the final details. Photography option has changed since i booked, its a little more expensive than what they had before, but okay in price i guess. We are doin the ceremony and reception on the beach. But need to figure out music situation. i hope some more people comment on this thread. oh if you wanna check out a video on you tube there is one of a wedding on the beach riuhttp://www.youtube.com/watch?v=LmVMi0pxY-g
Congratulations on the Engagement :)