Based on our past experience I'll weigh in on your questions.
T-Shirts: I think they have regular sizes (L or XL)
Helmet Cams: OK for practice.
Leathers: Inspected and required on every run, rain or shine. Just tape a pine tree car freshener to them. Actually hang them out so they get air flow at night.
THE SHIELD: Vic Mackey RULES! I've seen some well made custom visors.
Tent and Parking: Park where you want, camp at your own risk. The camp ground is and can be rather wild all night long.
Security: Normally everyone just pulls up and tosses their gear and used chooners on the ground (if they've worn any). You'll have other racers all over the place (which is cool) and you'll have the public walking around (also cool). Extend trust but use caution.
Holy Helmets: John will need to answer this one. While the rules changed years ago about helmets I'd be more concerned with a helmet that has vent holes drilled in it. <Insert safety lecture here> You'll see people running Bell Snow Wedge helmets, Icaro lightweight helmets and possibly even a Nascar pit crew style helmet. All full face.
Bunson Burner: Depends on what you're using it for.... Yes you can cook at the camp grounds, though most people forgo food and just drink beer the entire week. (OK, that's not totally true. I did see one kid eating one day).
2 Stroke jets skis are not allowed in the pool due to the oil contaminents in the exhaust. 4 strokers are OK as long as you have a kill cord attached to a 12 oz can.
John does a good job with the press. The VIP tent is well stocked with ice cold energy drinks, cooling fans and umbrella girls. The first sentence is true. The tent has drinks, shade, chairs, tables, but I've haven't seen umbrella girls.
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