First of all thank to all who helped with info!!! I am forty something and recovering from a ruptured Achilles. I am to walk as much as I can tolerate , but I am SLOW and tire VERY easily. The foot also starts screaming obscenities when i overdo it. I rented a chair from walker Mobility--nothing but goo things to say about their rates and SERVICE. Stayed at AS Music and my friend Cathy was with me, now known as She Who Offered to Push. She would push me to the food court then onto the bus then into the the park of our choice that day. We would park the chair, collapsed, either in obvious stroller/ECV parking or find an unobtrusive place (usually behind a trash can) and I would walk for a few hours. We tied a bright bandana to the hand grips. This system worked PERFECTLY!!! On the buses I would transfer to a seat and we would collapse the chair. Boarding was quick and efficient. When departing, if I was not too tired, I would step off at the back door and Cathy would hoist the chair. Or I would walk down the ramp. If I was too tired and creaky, we would use the ramp. Going up/down the steep front steps would have been hard for me. I am not overweight and unless you see my really nifty scar, I don't look like I should be using a chair. I got NO nasty looks from anyone, anywhere. If you are even considering doing this, I cannot emphasize how easy and trouble free it was! And when in doubt RENT THE CHAIR!!! I could not have endured the parks w/o it.