Looking for recommendations and advice to help us with an unexpected issue for our upcoming WDW trip (late April/early May). DH's right leg was amputated just below the knee in November. We thought he would have a prosthetic by now but his stump is still slowly healing. He will not have a prosthesis by the time of our trip, but does not want to cancel it. We're flying, and have notified the airline that he'll have a rollator and that transfers are difficult. We've ordered an ECV for WDW, have a HA room, notified ME that we'll need a bus with a lift when we arrive. I've researched rides that require ambulation (no-go for us) and tried to get an idea of how the ones that are HA work (still a work in progress- not really sure how they all work and what is too difficult to attempt). Can anyone offer recommendations, suggestions? Is there anything else I should anticipate and organize before leaving? Has anyone else been in a rollator for a plane trip?? Thanks in advance for any assistance?