Etiquette questions for any Catholics out there

Remember my foot problems?

I have a wedding to attend tomorrow. It's a full-on stand-up-a-bunch Catholic mass for a very, very devout couple. I will be dressed nicely (hisssss) which means GIRL SHOES (double hisssssssss).

My orthotics don't fit in girl shoes. I can't stand for more than a couple minutes without them before I'm in a fair bit of pain, and you would probably laugh to see me try to walk. I can, it's just that it's pathetic. And that's *barefoot* -- never mind the immense stupidity of elevating the heel and putting any weight on the ball of the foot. Yet I simply do not have any shoes that are Societally Acceptable(tm) that would be healthy for my feet. Frankly, I don't think there ARE such things. Not for GIRLS (hissssss).

If I wear girl shoes the inflammation will probably be back down to today's levels by next Wednesday, maybe a little longer depending on how much standing I do. Friday at the worst, I'd guess.

So - A POLL! What should I do? Please, people familiar with Catholic Mass, tell me. What's disrespectful, what's rude, what's acceptable and what's not? In case it makes a difference, I'll note here that I am not and have never been Catholic, and that I know exactly two people at this entire thing: rfrench and the bride. Oh, and that I have no wedding-appropriate clothing that goes even remotely reasonably well with black shoes.

( But you don't look sick )

Oh, I forgot to add options for "Get the @#$! over yourself, it's no big deal." Feel free to write that in. :-)