Flavorus Ticket-card on a friends credit card?

My friend purchased a few tickets for Countdown Massive and later found out that he wouldn't be able to go, so he gave the tickets to a friend and I. He purchased the tickets with his credit card. These are the Flavorus card-tickets, not an actual printed out ticket. I put the card number in on the home page and his name came up.
My question is, will we be able to use the card-tickets without my friend there?
I would guess they would check his ID and credit card before allowing entrance. Is there anyway to avoid issues at the front gate?

Thanks!