The tour was 9 hours altogether so pretty much a full day and was non-stop, go-go-go, the entire time.

This is exactly why I also just plan myself in advance. Like cruises where you go all over the world... for about an hour each time. What's the point?

Having said that, the views you got there are probably worth it alone - phenomenal! Really gotta check out some Europe when I get back myself =D