Picking Up Tickets

After I ordered my tickets (for the Oct. 2 Grandaddy show, if that's relevant), I got this message:
You must bring your confirmation e-mail receipt, picture ID, and credit card used to purchase the tickets online. Without your picture ID and either the e-mail receipt or credit card used to purchase the tickets, you may be denied entry to the event and no refund will be issued.

I have two problems: One, my ID doesn't match the credit card because I used my mom's credit card. Is this okay? We do have the same last name.
Two, I mysteriously lost my email receipt, but I did happen to save the confirmation screen that came up after I clicked order. It has the order number, the artist, the price, the number of tix, the type of tix. Will this suffice?

Any help would be greatly appreciated.
It won't be a problem as long as the name and address on your id matches the ones on the ticket and as long as the screen has the confirmation number on it.