DH has bought tix for my parents on his card with no problems. As long as you've got the tickets they don't ask you to prove who you are or show the card. A lot of people buy tix as presents for other people.
You'll be fine - we had tickets to see Blur but decided to go on holiday so sold them. The guy who bought them was worried once he realised that they were printed ones with my name on, but after I e mailed Ticketmaster and the assured me it was no prob, he was ok.
As Iklboo says, there's lots of people go to gigs etc with tickets bought as presents.