I used an ECV on our recent trip. Everyone I encountered over the age of 12 was perfectly considerate. At the beginning of the week, I sometimes parked my ECV out by the strollers while I stood in line, only to realize the line was longer than expected and I really should have kept it. By the end I only parked it when they told me to, which was only for a few rides. Those rides had manual wheelchairs available, so you’ll have the option of pushing your wife if she can’t stand that long or walk that far.
My rental ECV had a headlight, which I used a lot for indoor ride queues. Makes it easier to avoid crashing into walls/people.
Buy some glow bracelets from the dollar store if you’re going to be in the park in the evenings – you can decorate the ECV with them for better visibility.
My rental also had an extra basket on the back. It was sorely needed for my group, but if it was just me and hubby, I’d skip it. It made the vehicle so long, and I sometimes forgot it was there. There were a few elevators I could barely fit into with that thing sticking out, and I whacked quite a few walls with it.
We only stayed for the fireworks one night of our trip, and our game plan for getting out without losing each other was to stay put for five or ten minutes after the show was over. We let the bulk of the crowd get ahead of us. Then I set my ECV speed a little lower than we’d been using all day, so we could stay behind the crush on our way out.
The monorail is pretty easy in an ECV, and the large ferry that goes from MK to the TTC was a piece of cake. I tried the resort ferry once, and that was a pain. Stick with the monorail if you’re going from MK to one of the nearby resorts. The Wildlife Express train in AK requires you to back on, but then you get the same views as all the other passengers. I didn’t attempt any other Disney transportation in my ECV.
I also didn’t attempt to take my ECV on any of the few wheelchair-friendly rides. When I rolled up to the front of the line, a CM would always ask me if I was comfortable “stepping down into the boat” or whatever was required, and when I said yes they instructed me where to park. If your wife needs assistance, let them know. There are several rides that never stop moving and you board from a moving walkway. I saw them slow down the ride for guests who needed help. You can’t get the ECV very close to the loading zone on those rides.
I hope you have a wonderful trip!