ya, everyone is welcome to come try it out. it treuly is a run what ya brung type of events, from the f<edited forcensors>ss to a Vette to the wrex to a porsch to an elise to an 83 Toy celica, to one time a '7x toyota corrolla. As long as it is in decent shape mechanically, and driving it wont injure any spectators, you can run it. Instructors and many of us are willing to share info with people. either what gear you were in, when you shifted, which direction you took the slalom (if you could choose it) etc.. or just a "Hey, see the 4 cones I drug back?!"
Many are in it for the pure fun of it, and the rubbing it in to their friends of beating them with this or that, you know, general friendly competition. You shoudl come out and try it. everyone has a first time at one point. Coming to watch is a good step, however from outside and incar camera versions, it is noticably more hookingly when actually doing it.