Whenever I see someone "dressed up" I think they must work there (managers, customer relations, etc)... so I guess you can say it looks out of place when their riding a ride and what not... in a restraunt I don't see a problem with it. I would just think you would be uncomfortable in this heat, etc. And your feet have to hurt... can't wear sneakers with a nice dress, etc.
We pack clothes to change into before a nice dinner, as well as for our godkids. Hair detangler, brushes, body spray, etc.