Oh, Kevin. I looked at your website and it really doesn’t offer anything different from what other vendors with 20+ years of experience in RAGBRAY.
You might be able to set your credit card ap to authorize in batch mode (at the end of the day) instead of during each transaction. Also, get some paper credit card charge forms from your bank just in case.
Something that RAGBRAI really needs is a camping supply vendor.
Oh, and BTW, women always forget stuff, so take a lot of womens stuff.