My mom had knee replacement surgery not long ago and although she can walk short distances, she would never be able to make it through any of the parks. We are looking at renting her a scooter. My question is, can she park it somewhere while she gets on the rides? She doesn't need to use the scooter at all times, so let's say we are in the circus area, could she park it somewhere and walk around a bit? Also any opinion on going with the Apple Scooter rental company?