New Job?

OK I got a phone call today and I got to go take a physical test for the place where my lil bro works. If I get the job it will probably be night shift after 2 weeks but the thing that sucks is that I just bought tickets for Joe Purdy in Nashville on Monday night. I put the tix on my credit card and got them set to pick up at the will call office. Prob is if I don't go then none of my friends can get the tickets. I'm not sure I can just give them my credit card and them get the tix. And I really want to go to this concert. Lil bro said the 1st week is sitting through training classes so I might be able to go and drink a ton of energy drinks on Tuesday to stay awake.