Good point, I forgot about the Electric Water Pagent. The times for that are:
Polynesian Resort -- 9:00pm
Grand Floridian -- 9:15pm
Wilderness Lodge -- 9:35pm
Fort Wilderness -- 9:45pm
Contemporary Resort -- 10:05pm
Magic Kingdom -- 10:20pm(only during extended Magic Kingdom Park hours)
and a little descritption in case some have not heard about it:
Originally presented for the dedication of the Polynesian Luau on October 26, 1971, the Electrical Water Pageant is presented nightly at our Magic Kingdom Area Resorts. The pageant consists of two strings of seven barges, each carrying a 25-foot-tall screen of lights featuring King Neptune and creatures from under the sea in an aquatic parade set to Disney music. Flags and Stars! The pageant concludes with an inspirational salute to America, with Flags and Stars set to a patriotic musical score.
So it would not work for the 5pm show unless you go to the campfire and then return to the beach, but still a great option...