Okay, I disagree with everyone.
I have the pink Jeep stroller...and as far as I could tell, we were the only family in WDW with it! It made it easy to find. We took DD when she was 18 months to Disney, and she fit in it quite nicely. I liked that it had a recline, not as nice as a full-size stroller, but it was so much lighter! I loved how easy it was to get on and off the busses. It comes with a sun-visor, but depending on the time of year you are going, you may want to get a visor extender for it. I think they sell them at Toys R Us.
Plus, I LOVE the fact that its pink!
We did two things to carry the diapers and such. We either put the bag around the handlebars, which worked fine for me but not for DH who is 6 feet tall; or we put it on our back. Yes, we switched to a new Jansport backpack to use a diaper bag for the trip. It was so convenient we never switched back.
I think the Jeep stroller is a great value for its price: its light, easy to fold up, reclines, is comfortable, steers easily, and its PINK! I love that I splurged and got one girly thing for DD.