if your cell phone has internet access you can check in on your phone. Thats what I do. I set the alarm on my watch to go off 5 mins before the 24hr mark so I can put the info in my phone and hit enter at the exact time.

For our next trip I did pay an extra $20 for 2 of our tickets to get biz class tickets so at least 2 of us are guaranteed to board a1-15. My ticket was a rewards ticket and based on my luck....I am sure that even if I check in that ticket at the 24 hr mark exactly I am going to end up in the C group. At least I know my DH and DS (6yrs old) will be together on the plane. Hopefully they can save me a seat with them w/o too much hassle.

But back to original topic... you can check in on cell phone, someone at home, conceirge or guest services at any park. Don't need the paper pass at time of check in. You can print at airport.