The following is speculative and should by no means be taken as representative of SupermotoUSA in any way, shape or form.
I don't know about the surface of this track so take this with a grain of salt. If its hardens into a blue groove in places, it will be very important to make sure nothing is draining or leaking on to the track surface. If the surface is a cushion, which seems likely (Oh Lordy in Heaven, please let it be a cushion) fluids have less impact. I would still expect the jumps to be pretty hard packed unlike an MX track. SupermotoUSA can be forgiving in tech for first timers if it appears you have made some effort to prep your bike. A dab of silicon sealant on any drain plug or filler cap is a good idea for first timers if you don't drill or safety wire.
That said, its always the riders responsibility to bring a safe bike to the track meaning all bolts and nuts are tightened correctly, controls are working properly and nothing is going to fall off or present a danger to yourself or others.
Again, this is my opinion and does not represent the views of SupermotoUSA or anyone else.