My family will be going on the 7 night Western Med cruise this fall. I have read several threads about formal night on DIS, but did not see this particular question. I am in the Air Force and we are authorized to wear our "mess dress" to formal events. Have you seen military personnel in uniform for formal night on DCL? I would rather wear it than a gown but it may be a bit much if other cruisers don't dress up. TIA.