Originally Posted by celter456

Thanks for the suggestions so far, it sounds like stopping is the recommended option and Cologne is definitely a place to hit. The majority of our nights will be spent using hotel points and there are also properties in Frankfurt, so I'll look to see if we can spend a day/night there as well.

TheMadBrewer - A sleeper car is an option we were initially considering. We'd spend the majority of the day in Amsterdam, hop on the car, sleep, and wake up at our destination.