We have them for our twins. I won't be using mine at WDW. I plan to use a double to make it easier for my DH and I to "baby swap", but even if we didn't have two, I probably wouldn't use it for the following reasons:
1. The handles are about 2 inches shorter than we'd really like - I don't want to spend half the day hunched over to reach down to the handle. But, with that being said, try it out - it may be perfect for you.
2. They don't recline very far. I'm not sure how old your child is, but mine are 18 months, and I really want a stroller that will recline well in hopes of getting them to take their naps in the stroller if we decide not to head back to the room one day.
If you don't need it to recline, and the handles are at a good height for you, I'd recommend it. They're light weight and very easy to use and my girls seem to really like them.