Dress up for Dapper Day: While this event remains an "unofficial" Disney affair, Dapper Day occurs biannually at multiple Disney parks worldwide. The event encourages participants to dress to the nines for a day of classy fun in the parks, so you'll never see a better-looking bunch of resort guests.
Complete an Epcot World Showcase Passport: When going "around the world" at Epcot, you can get a stamp from every country in a passport booklet. It's extremely satisfying to complete the journey!
Eat at every Disneyland restaurant: Eating at every Disney restaurant would be a stretch even for a megafan, so try noshing at every eatery in a single park instead.