Broken_Halo,
There's plenty of beach between the GF and the Wedding Pavillion....what about having your ceremony on the beach, just down a bit from the pool? Your pics would still have the GF and the lagoon in the background. Also, we didn't actually have the ceremony right on the beach, it was on the grass just before the sand, but facing the GF. Apparently, Disney does not want to set up chairs and such right on the beach.
There are plenty of other gorgeous locations to choose from - you'll find one perfect for the two of you!
Kristi