The closest "beach" to SBP is probably actually at the Beach Club resort. I know I've seen some photos taken there.
They've changed the ceremony times since I was married...at that time it was 9, 11, 1, and 3 for Escape/Intimates. I'm not sure what they are now...and it may very well be different for Wishes. Someone else might be able to help you with that, if all else fails, email your coordinator!