How can I make this a comfortable trip for my mom?

My mother suffers from poor circulation in her feet. When she walks a lot she sometimes gets cramps . We are going to Vegas and she doesn’t want to feel left out. I know we will be doing some moderate walking but I want her to be comfortable. Anyone have any suggestions on what I can do to deter foot cramps and possible back pain? I *did* google it but anything extra is always helpful. Thanks!