Thanks! I got the same letter a few weeks ago and ordered two tickets immediately over the phone. I have to run now, but will check that phone # and give them a call again later today to see where the tix are. I seem to recall that the rep. said the tix would take a few weeks to arrive. She said the tix will arrive via FedEx, and I'll have to sign for them. No FedEx deliveries nor notes here yet...
I ordered mine throught them last year. I did not get my tickets until maybe one week before the concert.