DHS has a High School Musical 3 show in front of the Sorcerer's Hat several times each day that they probably would enjoy.
I'm sure they would enjoy Fantasmic at DHS as well.
As for getting some "me time" for an hour, if you have any "pirates" in the group, they do offer a Pirate Cruise at the Grand Floridian for 2 hours at 9:30 and 11:30am. You drop them off and pick them up when finished.
From the DIS:
Ahoy! Any child who has ever dreamed of being part of a pirate adventure will enjoy "heading out to sea" in pursuit of treasure.
Children ages 4-12 will be outfitted with a red/white striped pirate Mickey hat (or a bandana) and board their pirate ship (pontoon boat) under the supervision of the "pirate" crew. At each "port of call" a new treasure awaits. At the final stop, they can share their booty while enjoying lunch. At least two Cast Members accompany the children, which are all CPR certified. All participants must be potty trained. (No Pull-ups.)
Lunch is usually Peanut butter and jelly Uncrustables, Goldfish crackers, Rice Krispee Treat and fruit punch juice box"
It would cost $90 for the 3 of them for the 2 hour cruise.
You could also check out
www.kidsniteout.com. Its $94 3 kids for 4 hours which includes the $10 transportation fee . They come day or night right to your resort and are Disney approved. You can even request the age of the sitter (grandmotherly, college age) to suit whatever you think the kids would like.