Spanish in retail?

So I applied to work at a Hot Topic. I really want to do well in this job, I'm a huge fan of the store and the company and I really don't want to screw this up. During my interview, the manager told me that she was not going to hire anyone that wasn't bilingual, but she was going to make an exception for me if I learned some Spanish for the job. I know I'm capable because I did the same thing at my other job in a restaurant, I learned our whole menu in Spanish and how to say things like "anything else" or "your total is $_____," but I'm just worried it will be different. Like for example, band names, Hot Topic is huge on music and rock/punk bands, is the name of a band different in Spanish or is Fall Out Boy the international name? I was just wondering is anyone bilingual can write out some possible retail situations in Spanish and help me familiarize myself with them. Thank you!