Show your card

We have planned a family trip to Michigan. The baby will be baptized up there in the chapel. G1 is buried next to the chapel. It is very important to the husband that the baby be baptized Catholic. I am not Catholic and therefor do not know all the rules. We met with the priest in May to discuss the details of the event. Everything is set. We must work out the details of the Godparents. One Godparent must be Catholic. In order to prove that you are indeed Catholic you must provide a card from your church. The priest asked that the Godparent present the card at the baptism. I guess you must be a card carrying catholic to qualify as a Godparent. Is there some kind of test you take to get the card? Do you pay a maintenance fee to keep the card? What do you do if your card is stolen? I am Lutheran and we were never given a card. Now about this card. Must you carry it with you at all times. Do you need it to get into heaven? Do you get 10% off at religious stores or religious events? The husband will have to handle all of G3's questions.