Hi Allison,
We also love sending postcards as it is such a fun souvenir to receive after you get home from your vacation. The Main Street USA stamp is one of a kind and is the only specialty location stamp available at Disney World, but there are some other fun ways you can include different parks in your vacation.
One option is to bring or buy a postcard at each theme park and have a character that is unique to that location sign the postcard for you. This is a fun way to collect signatures and memories that make that postcard even more special. We love to
Meet Moana at Character Landing in Animal Kingdom for a fun postcard signature,
Meet Mirabel at Fairytale Garden in Magic Kingdom,
Meet Figment at ImageWorks in EPCOT, and
Meet Olaf at Celebrity Spotlight in Hollywood Studios.
You can also make reservations for a character dining experience and have each of the characters that visit your table sign it! It is a great way to commemorate a fun experience you enjoyed together and looks wonderful in frame along with your family photo from that dinner. One of my favorite character dining locations is
Garden Grill in EPCOT because you get that coveted photo with Chip and Dale. Another fun thing about this meal is that the characters sometimes come around multiple times and get to engage more during the meal since it isn't a very large dining room. If you are looking for princess sightings there is no better location than
Cinderella's Royal Table for the full castle experience.
When you are ready to ship your postcards home, check out
mail services at Disney World for all the locations where you can buy stamps and get your precious memories shipped home.
Happy Planning