Fastest way to get tickets to add to MDE?

[DVCMomBLT]

We are leaving in 3 days and had a last minute addition to our party. The rest of us already have season passes. We need to buy a 5 day park hopper for our new guest. We want to add them to MDE as soon as possible, so that we can make fast pass reservations for them. What is the quickest way to do this? Basically, I just want a "code" that I can enter to add ticket. I don't want to have to wait until I get the physical ticket.

Thanks!