My son, who doesn't live at home anymore, received an EMPTY envelope with those words where the return address should be with pics of Mickey, Goofy and Donald as construction workers. There are 6 of us going to WDW is 10 days, but he was the only one who got this and it was unsealed and empty when it came. Does anyone know what it could be? I didn't know where to ask this question. We are DVC owners, but his name is not on the deed, only the reservation.