I hope some current mids chime in on this...my DS brought some nice Khaki pants and long sleeved shirts for the times when he was checkiing in, touring the yard and with the mids as well as some comfy clothes for overnight at Bancroft. I saw a gazillion candidates in shorts and cut off shirts, sweats and t shirts....maybe I am old school, but my DS approached this like an interview...not formal, but just wore something that he would wear to look like he meant business and took the weekend seriously. I have also read on this forum that some of the candiates brought treats for their mids they were staying with....we did not do this, but that is a nice gesture. Take advantage of this great opportunity to ask quesions and make sure that USNA is the right fit for you. Good luck. Great question.