I vote for evening pumps / slippers, especially if you plan on dancing. You didn't mention budget, but you don't have to spend a lot to get a pair of nice velvet or black suede plain slip-ons. Patent or calfskin pumps look good with a kilt, IMHO, too. I do agree with MoR: shine is important and easy enough to do if you are wearing smooth leather shoes. It shows you care.