As much as I'd like to not help you for being a gopher fan, I'll still offer some advice-
go to USCHO.com message board, in the Tickets and Events forum there should be some UND threads started by RachelB. She works for the REA ticket office and should be able to answer all your ticket questions.
As for hotels, there aren't any that are within walking distance but I think one in town has shuttle service to and from the games, I can't remember which one.
Bars - Whitey's/Blue Moose and the El Roco also have shuttle service for games.
Since I was nice to a gopher fan, you are buy the first round of drinks before and after the game