Some hotel elevators (e.g., Sequoia Lodge, Newport Bay) don't have much capacity for mobility scooters (or strollers), so there can sometimes be a long wait.

Disney are amazing at catering for people and go above and beyond to help

I struggled to open open doors by myself and needed assistance of the person I went with. You have to plan where you're going to get on/off the curbs. People easily didn't pay attention to their surroundings and I had to stop very abruptly multiple times due to children and people walking across my travel path/ stopping in the middle of the paths. Their DAS pass is amazing for those that need help, and the staff were ususally very good at telling you where you can leave your equipment to get on/off rides.

Only issue is not being able to get on the shuttle bus with the transfer bus with the scooter