What I did was bought the postcards ($1.00 each) and took it to the lady who does the postmark stamping. She is located outside the Owl Post at a small table to the side under the Owlery. She stamps them for free. I then took the cards home with me and sent them to my friends in envelopes. That way no other US postmarkings would be on the card. It only took 3 days for them to recieve the cards when I mailed them, but Im still waiting for one my friend mailed to me 3 weeks ago from Universal.