It's the only way to go if you're under 35 and can't find any campgrounds too!

My husband did this on his 200 mi ride from Philly through the Jersey & Delaware shore, down to Pax River, Maryland. He learned early to make reservations, after having to beg to use a store room with two fold-a-beds at a completley booked motel. (Why was that place and every other place booked? Who knows?)

Also, we've had problems using Visa in Germany in restaurants not affiliated with hotels. There's nothing like asking your cousin to pay for dinner, until you can cash more traveller's checks at the local bank! I think it's getting better, but it's still not as ubiquitous as America.