For years I have arrived early (pre-show), but always within the NOTAM "window". What happens if someone were to arrive,say, Thursday morning at 7am on July 20th? Is KOSH an uncontrolled field at that time? Is the tower operating "pre-NOTAM"? Not finding this in the NOTAM. AS for parking, I assume that there might be Vintage parking volunteers there, even a day or two before the NOTAM kicks in. (But we all know what ASSUME means). If they are not there, I will taxi to the Magoo taxiway and find my old spot Thanks in advance.