Wasn't sure exactly where to post this but Berlin is where I'll be most of the time.
Two of us will like to spend a day in Hamburg seeing that the train ride is under two hours.
Just looking for opinions on if ordering tickets from one site has any benefit over the other. Also is it a good idea to reserve seat assignments? Say if we don't reserve seats, do we just sit anywhere, considering we wouldn't really know if we're in someone's reserved seats... I hope that makes sense.
Thanks for any help.