Chris,
Have taken my bike last 2 years, first on Bleu, second at Karting Nord. Camping ticket checked almost every time I went into the site, with or without luggage, even when wearing shorts and a tee shirt. Some Herbert even wanted to check it at 1am once. Got a little better by Friday as one or two of the guys on the gate started to recognise me. Real pain as I haven't got a fairing and had to dig it out of a pocket each time.