I can't remember if the parks will do that or not, but you should know that you don't need to print your boarding pass to check in and secure an early boarding group. All that's required is that you check in, which can be done on a computer, or even a Blackberry, phone or other device with Internet access (go to mobile.southwest.com). If you check in and get the A group, that will appear when you print your boarding passes out at the airport.