OP here!
OK, just to clear a few things up:
1. DD is about 80 pounds. I am in the process of seeking nutritional counseling as well as an endocronologist.
2. She is HIGHLY active - she does karate and dance, plus she's always up and running around the house, dancing and singing - and now that it's nice out, she loves to ride her bike and play baseball with her brother.
3. We did a trip in August 2008 and we
barely used our strollers then. But we were in WDW right after a hurricane and the weather was unseasonably cool. We didn't have much of an issue with lack of stroller use.
My DH and I are just trying to think of convenience. I'd rather NOT use a stroller, but I do worry about getting back to the hotel if she's asleep....we're staying at the BC, so it's a lot more buses than when we stay at a monorail resort.
I'm going to look into the rentals as mentioned in this post. I sincerely appreciate everyone's insight and suggestions! Thank you!!!