I like the proposal idea.It was very nice of your travel agent to get the photopass for you. but... honestly, I think it's kind of creepy to give access to photos of total strangers. If I were a parent I wouldn't want my kids photos available to people I didn't know.
I have to agree, I don't even let everyone on my facebook page see all my photos.
And don't stress too much over the proposal, it'll be great even if it doesn't go exactly as you plan! I'm a big fan of private proposals rather than public ones as well, so asking her at the resort sounds like a good idea.
Fellow Americans, I hear your tambourines inside my head and that's no lie!