Oh, they did! CM's kept telling us we needed to go to Main Street that day. We missed the Dapper Dans, but they did take pics with some citizens of Main Street. We had a great time. The kids are hoping to get one more wear in the parks out of their current costumes before outgrowing them.
They tell MIL what costumes they would like to have and she makes them for them - they are lucky, as they are all about meeting characters in costume! I will share one non-empty park pic because I have no shame.