Though the booths all take credit cards and room keys, please, PLEASE use cash as much as you can. It helps the lines go much faster. It was really frustrating standing in the hot sun waiting for the cards to be swiped and approved and signed. Just my humble opinion. We tried to pay with small bills and change.... things are often 2.50, 4.50, etc. so having quarters with you as well as ones and fives REALLY help move the lines along.
Most lines were relatively short for a weekday, but popular ones like Canada, New England, Italy and China had waits of 10 minutes or more.
We also saw people using travelers checks.
Holly