<human>: Condense the text into a few key points

Hi Reddit,
I have never flown before and after failing to get decent answers from family members, I have decided I would give reddit a shot. In July I will be flying to Canada out of NJ; however, my bf paid for the ticket with his credit card. I've read online that during check-in the airport may do a random credit card check or ask for the credit card the ticket was paid for with. I obviously do not have the card, and I won't have the card the day of my flight, since it will be in Canada. I'm frightened that I will be denied my boarding pass...does anyone have any experience or know how this does/will work out?
Also, this may sound like a dumb question. But do they measure your carry-on bags? I believe my bag is ~1" or less over the maximum size. I can't imagine them not allowing the bag for something that little, but you never know. I would appreciate any helpful answers, thanks :)
<bot>: Don't have the credit card ticket was paid for with; will they still give me my boarding pass? Do they measure carry-on baggage?