I am pretty sure guest services will check you in. So will the hotels.
We just do the 24 hour check-in via our cell phones and then have SW print our boarding passes at curbside check-in. Bonus in that you get the smaller boarding passes instead of 8.5x11 sheets of paper AND I don't have to carry the paper around the parks.
In March, we were ready to get on Mummy. I had the website preprogrammed on the phone, so went to the cellphone site, checked in and within 5 minutes was riding Mummy. Got all "A" boarding passes. In fact, we were the first 5 A's after the business people (of whom there weren't any), so we boarded first after the two wheelchair people.
If your phone has web access, it is definitely the way to go!