I have a degree in Public Relations and a minor in Psychology. I didn't decide on OT until last fall, but my psych minor helped me fulfill most of my Pre-reqs. As I was told by many schools, you can't major in OT so they don't expect you to. They just want their pre-reqs met. I think its great to be an exercise science major or something in the health field, but I think PR offered a diversity on my application and my high grades in the sciences shows I'm strong in multiple areas. I love my PR degree and if I had to do it over again, especially knowing what I do now, I wouldn't change a thing. It also offers me another field I can get a job in if I need to make extra money while in school.
That said, I will be attending NYU in the fall, which is a top school according to the rankings and I'm in love with their program. I can promise my major had very little to do with my acceptance. Focus on your letters, your essay, and your grades!