There are three paved circles and three grass circles. OTS and Classic are flown on paved circles. Ignition OTS is flown on one of the grass circles. Tuscon is at 2500 ft. I generally fly at about 800 ft. My thinking is that the ground is about four feet higher in Tucson than I am used to.

So I am a little cautious on the first couple of practice flights. I ordinarily do not change fuel or needle setting. I like to go out a couple of days early to get in practice flights. This year I did two practice flights each of the two days, then flew very early the first contest day and very late the second day. Fox 35 ran the same as at home, regardless.
OTS is flown on two circles, one flight each day, swap circles the second day. Go down the list the first day, up the list the second day. Scores are added to determine standing. Flying starts early to get through by early afternoon, before the wind comes up. Classic is flown on three circles over three days, best two out of three are added together.
Shame on you if you die without going to at least one VSC.