We rented a stroller this past weekend for two of the days - $10/day. It was a pretty good choice for our 3-year-old DD. She walked about half the time and rode about half. The stroller was sturdy enough to hold my backpack on top even when she wasn't riding in the bottom. It was nice not to have to schlep the stroller around between the resort and the park - with one exception. We stayed for the fireworks Sat. night, and DD fell asleep before we managed to get out of the park. That meant that after we turned in the rented stroller, I had to carry her to the bus stop. Hubby had stayed to enjoy some of the rougher rides with his brother, so it was just me and the grandparents who weren't able to carry her. Of course, right after the fireworks is the most crowded time at the bus stop, so we had to wait until the second bus came before we could board - about 25 minutes total. There was no place to put her down. Then, of course, after we got to our resort (POR), I had to carry her from the bus stop to the room which was a bit of a walk. Carrying a 35-pound kid that long after a full day at Disney is a feat. If it weren't for that one night, I would recommend renting whole-heartedly if you have a preschooler. However, if you plan on staying 'til the kids fall asleep, consider taking your own!