Help on which job to pick? It's a first job..?

I have two job offers. One for sonic (fast food) and one for maurices (a retail clothing store). I'm not too sure which to pick. Sonic gets twice as much money and I'd constantly be on my feet (so I'd lose weight). However, maurices is my favorite store, air conditioned, and you get 40% off of merchandise, and it is a good environment with great music. I think I would enjoy maurices more, but I'm worried that if I did work there, then I would always end up blowing my paycheck there. Sonic on the otherhand, makes about $200 more a week than maurices. Based on your knowledge and experience, which do you think would be a better fit for me in your own opinion?