Just do like the Queen Mother was told by her mom regarding her wedding night, "Now dear when it comes to your wedding night, just lie back and Think of ENGLAND!"
Your focus is on how you will be perceived versus how you want to be perceived. Before you hit the showers, think of one of the funniest things that you have ever laughed at, and it will relax you, and the heat in the shower will do your cock proud.
Some may even think you are getting a woodie.
BTW are most of the guys cut or uncut on your hockey team?