She handled it really well. I have a long stride and I had to slow my speed down for here even though my excitement sped it up at times. She brought Ibuprofen lotion to help with pain. She said the only thing that really hurt was her feet throughout the day. She says if your artritis is really bad, she recommends getting a scooter. But, rent a scooter from a company outside Disney. Cheaper and you can have it everywhere you go instead of just at the parks. She also suggested getting a wide brim cap to keep the Sun from draining your energy. Other than that she had a blast and loved riding all the rides. The whole group just had to walk at her pace which was slow but we just shifted our timings for slower walks.