We don't always go back to our resort to change for dinner at a nice restaurant, but if we are going to be in the parks all day I throw a "nicer" shirt for each of us in the park bags. That way, we at least look respectable and "dressed" when sitting for dinner and aren't all sweaty and stinky, hahaha. Seriously, though... we usually plan dinners at nicer restaurants for our "down" days or for when we know we won't be staying at a park all day, specifically so we CAN dress up a little and have a real night out. It was easier when MK was open very, very late as we'd have time to leave the park, change for dinner at GF or the Contemporary, and then go back into the park for the night (albeit a little dressed up). Can't do that anymore.