Do they still give you a list of hotel recommendations? When I went through, they gave you a list, which showed one or two of them offering a shuttle to the interview. Probably half or more of my interview group used the shuttle. I rented a car and stayed at one of the other ones, but if, like me, you don't like relying on the shuttle in case there's an issue with it, I wouldn't worry about it. I think they'd understand since a lot of people use it.