What to wear for interview at sea world?

I have an interview for sea world and I was wondering what would be appropriate to wear for the interview. I have slacks, dress shoes, and a long sleeve shirt I bought at H&M. I'm not too sure about the shirt however because it's got a bunch of tiny stripes. Would a plain color suitable? Am I overdressing for it? I am really pressured for this job so I don't want to make a dumb mistake because of my appearance. Thanks!