What I did for our most recent trip (oct 29 to Nov 1) was purchase on Oct 19th, via Getawaytoday.com (cheaper than Disney gate prices). You recieve an email confirmation (can't lose email, right

). I printed the confirmation sheet but also saved the email just in case. When we arrived and checked in at DLH, they printed hardcopies of our tickets for us.
I want hard copy paper tickets (not printed at home) for our scrapbook.
In the past I've purchased through GAT and walked to the ticket booths the day before we are scheduled to enter the park to have them print the tickets. as mentioned above 5-10min wait