Water Parks-
Blizzard Beach
Typhoon Lagoon
Aquatica
Wet n Wild
Downtown Disney-
Lot's of shopping and eating opportunities
Legos store with the outside play area
Disney Quest (though some of the games/attractions might be a little too old for your children)
BoardWalk area-
Also shopping and eating opportunities
Hop the boat and ride between BoardWalk, Swan/Dolphin, Hollywood Studios and Epcot.
Rent a surrey bike and go around the area for 1/2 hour or so
Walk around in the Disney resort - Beach Club, BoardWalk, Yacht Club
Play in the arcades at the resorts there
Stop by Beaches and Cream for ice cream
Mini Golf-
Winter-Summerland
Fantasia
Pirates Cove
Congo River
Hawaiian Rumble
and a few others in the Orlando-Lake Buena Vista-Kissimmee area - you can usually find discount coupons in the books at hotels for the non-Disney mini golf places
Pool at your hotel?
The Central Florida Zoo is in Sanford a few miles north of the Orlando area
There are plenty of things to do, you'll just need to find the right thing(s) from all the possibilities for you and your daughters. Good luck and have fun.
Dick Taylor