I am staying at the Renaissance downtown Thurs - Sun. I want to get an early start on a hike Monday morning at Mt Rainier. My plan is rent a car downtown Sunday, drive to the mountain and stay Sun night, hike Monday and return the rental car Mon PM near the Sea-tac. Then stay overnight there and fly out (6am flight) on Tues. Looks like it would cost me 2 days rental though. Any problems with my plan or any way to trim costs?