I don't know if they sell out of the strollers? I usually book mine online before I go. We use Kingdom Strollers. I highly recommend them. We rented a single BOB and loved it….super easy to push around and perfect size for my then 4 year old. The only bad thing is it does not fold up all the way and is pretty bulky, but we used on the busses and did fine with it. The stroller was at our resort when we arrived and we just left it at the front desk when we checked out. It was also very clean and new looking when we got it. A lot of people love the City Mini strollers also.