I know there's a Ritz camera store in Mankato. They'd probably carry a limited supply of pro film, but no chemicals. Where will you be staying? If there's something you've forgotten that you *must* have, I'd plan a trip to the southern metro (Burnsville) to a National Camera Exchange store. They usually have chemicals, along with almost all of the film you could need. Depending on where you'll be staying, it may only be an hour drive. (Dead Link Removed).
Hope that helps,
Kimberly