In Reply to: Garuda Credit Card Checks posted by Iheartbali on Tuesday, 3. April 2012 at 21:14 Bali Time:
I have traveled with Garuda for many years and have never been asked to produce the credit card used to make the booking.
I have also seen the RED note on their site, saying the person must be a part of the traveling group.
If I were you, for your own peace of mind, take a photo copy of your marriage certificate with you that will justify the name change. They probably won't even ask for it, but it will stop you from worrying about the what ifs.