Are PARISites planning on using boat's tours or looking to book private tours? Any guidance on where a private tour is best? Are most going to Heidelberg or are some going to Mainz? If we have a large group, any chance we can get a bus to ourselves that day?

Anyone leaving Amsterdam by train or are all flying out? If by train, which train? We will probably book train soon and would love company if anyone is taking train back towards Paris.