It doesn't matter how much you look like McDreamy from Grey's Anatomy. If your boss regularly accuses you of being too dreamy, and your day job is serving Big Macs, your date is likely to subject you to careful scrutiny on a whole laundry list of stringent criteria.Oh, really? I'd rather you fly your flag proudly, whatever your interest -- I'm eventually going to find out about your interests anyway.
And one of those may be the credit card with which you pay the bill (assuming she lets you) at the end of the evening of your first date. It's not that you necessarily have to pick the most prestigious piece of plastic from your wallet, but it might be a good idea to match the card you use to the interests your date displayed during your time together. If you didn't bother to elicit her interests, it's unlikely to matter how (or how much) you pay.
Anyway, do you really care what someone who would judge you on such a superficial criteria really thinks? If you do, I don't think you're the one for me!