Have you considered hiring a local contractor to fix your roof? Or you could try contacting Champion Window, if there's one in your area. They did our entire roofing last year; you can schedule a free in-home estimate without any obligation to hire them.
Try MeridianHealthStore.com. It's an online medical supplies store with a good selection of wheelchairs. You can read about the different models available to find the best one for your mother. Good luck and enjoy your trip!
Horse drawn carriage!!!! That is an awesome idea. And hey, u can always write a small poem for him and read it to him when you guys are taking that ride.
Why are you mixing the two themes? I mean maybe its good but why take a risk. Or you could check out for some of the mix like this on internet that would be better.
You might be surprised by how affordable rollators can be. It might be worth it to just buy one rather than rent. Check out online stores that sell discount medical supplies like MeridianHealthStore.com, you might find something within your budget.