The Banned of Brothers shoots at TV in the early oughts were fun shoots. One year it rained heavily the night before and the range was soaked, making it a giant mud pit. I showed up in my daily driver, a 1996 Impala SS, and started to make my way down to the 200 yard line where folks were set up. TJ was on his tractor pulling some guy out of the mud and gave me the stink eye because I'm sure he thought he would have to pull me out at the end of the day. I didn't make it to the 200 yard line, but I did drive out on my own, albeit with 200 lbs of TV mud on my undercarriage. Months later when changing my transmission fluid I found small rocks in the pan!
[/tangent]
Zhukov makes a very good point about liability. If a lot of folks show up, even with most if not all very safety concious, range safety needs to be thought through carefully. I've been at shoots with both volunteer and paid RSOs where safety violations and accidents occurred, though thankfully no one was hurt.