So even if you are checking in on a Sunday and checking out on a Friday, but are only buying 4-day MYW tickets, they can be put on your hotel key? Do you purchase them right at the hotel desk? I suppose you would be forgoing any advance purchase savings by doing this but it would be convenient. I was under the impression that in order to have the admission tickets on your hotel key, the ticket had to equal the number of days you were at the hotel.