This board has been terrific in helping to plan my trip I hope you can help me with one more thing. My 81 year old mother is coming with us to Disney in June. She will be in a wheelchair due to her COPD and she also has severe arthritus in both knees. although she can transfer from the wheelchair to most of the rides, it is very difficult for her to get up and down/ in and out of the rides in the time alloted. I've been trying to find a lightweight, portable elevated seat cushion( at least 5-6 inches) I could bring and place on the ride seat for her. Similar to what they use on toilets ( the height) but w/out the attached arms - which would be too bulky to carry around. Does anyone know of anything like this or have any other suggestions? thank you