The hunter's license holder is a great idea! For our past few trips, I have bought plastic holders bought in the office supply section of wal-mart. The GAC's will fit in them if folded in half, but the cast members often made us take them out when entering an attraction. The hunter's license is bigger and would hold them, but I have a feeling that unless you can get one that is clear on both sides, the cast members will still make you remove it. I'm going to have to check the sporting goods section next time I'm in wally world!
When we arrive at our resort and check in, we go right to the resort store and my kids pick out their lanyards for the trip. It's a practical souvenier that the kids look forward to every trip!