Does Grandma speak/read German? That would make your trip much simpler and would be another good reason to take her along.

My mom doesn't speak German, but I had 4 years of it in high school...25 years ago! Unfortunately I don't remember hardly any of it. Although in my travel research, some of it has been coming back to me.

I hope they don't charge an arm and a leg for the SUV, that would be perfect for us!