If you see trash on the ground in Disney, pick it up (provided it's not too grody). Be the change you wish to see in the (Walt Disney) World.
I know this may sound a bit nuts but I pick up as much trash as I can when I'm visiting the parks (not a cast member). Have long admired Disney for its cleanliness and anything I can do to keep the dream alive, I'm all in! But I do have a grody threshold!