WHEELCHAIRS! We often take my DH's aunt who will be 89 and is legally blind. It took a while to convince her to use a wheelchair (3 trips and commando touring plans) but she finally relented. The first day she used it was when we went to AK for the day. The sidewalks there are a little uneven and she has no depth perception, so she was happy she had one. My SIL has MS so while the rest of us were on the rougher rides, the two of them would find a shady spot and enjoy a cool drink or a snack while waiting for us. Please don't misunderstand, I don't think all elderly people need to be in wheelchairs. But in our case it was a matter of her safety. It also helped her to stay her energetic self for the entire day.