I haven't used phone, but I've ordered via the internet. I had the tickets mailed to me at work because I didn't have a locking mailbox at home. It was no problem. I ordered. About a week later the tickets showed up in the mail. Very easy!
I'm spreading the cost for this trip out over three months...next week I'll order one ticket, another on payday in March, the last on payday in April. I'm thinking of checking out the Anaheim.com website. I hear their price is $4 lower than the internet prices from Disney.com. Hey, $12 is $12!