I have rented from Walker for a long time, and still do, even if they aren't an authorized agent. Once you use them so many times, your rental price gets cheaper and they know me by name when I call. I am down to a rental price of $20 a day for the heavy duty extended range
ECV.
IF I have a problem, they take care of it right away. I do have to meet them to take the ECV and to return it, but they're great and the guys are so nice. I was on crutches on our last trip and they even hooked me up with a rack to hold them on the back of the ECV for no extra charge. I have run our of juice and heir driver brought me a new battery and met us at the entrance to the park and changed it out and it was like 7pm. I broke a key off once and there was a rental on hold at the GF, I was able to get the hidden key from it and they brought a new one for the other ECV.
I even get birthday and Christmas cards from them every year. Oh, and if we have family going and another member of the group needs an ECV, they can rent it at the same price I do, as can anyone I refer.