I would also urge an off-site ECV rental. I went to DLR with my mom and she rented a ECV through DL while we were there. I have to say, they were less than friendly about it and if I ever experienced a non-DL magic moment, the rentals had to be it. My mom cannot walk or stand very much (on oxygen), so this may not be as bad for your friend. However, our problem was
getting the ECV. This was the typical morning for us:
1. My dad drove my mom and I to the closest drop off spot he could on Harbor Blvd. then drove back to the hotel to drop of the car and walk to the security line with us (we stayed at the HoJo's).
2. I assisted my mom to the walk to the security line (which was almost too much for her).
3. She couldn't walk to the gates, so she sat down while I waited in the entrance line, waited in line to rent the ECV, then drove it back to her.
4. She got in the ECV and then we had to get in line again to enter (since she had not entered the park).
Not only did this process take about an hour and half, but we had to ask various cast members who were in varying states of knowledge about ECV's and whether we our plan was possible. The worst time we had was our last day when my dad drove and parked since we checked out of the hotel. She couldn't walk from the tram, through DTD, to the security gate...it was just too far for her. They will not let you take their on-site ECV's past security through DTD. NO ONE of the CM seemed to know what to do...I finally begged the security guard to escort the wheelchair they happened to have at security to my mom and wheel her back. Then the whole process described above began again.
Sorry for the long winded response, but I couldn't help sharing my bad experience with Disney ECV rentals.
As far as when my mom did get her ECV, she had a wonderful time and felt so free at DL

. Sometimes we couldn't keep up with her which was a nice break from her daily struggles.
