Sorry for the late reply...I've been out of town for the last week.
I ended up going Sat for practice as I figured if they were running a long GP track with 4 minute lap times that I'd need some time to remember where the corners were at. Turned out they ran the normal mx track with a couple of the doubles having detours around them. Everybody ended up getting 2 long practice sessions on Sunday so there was no problem getting familiar with the track. Attendance fell in line with most mx events these days...pretty light. They ran 3 modern bike support races and 2 old bike races with about a dozen old bikes being in each race. There were 2 other guys besides myself in the 50+ class and we were done with everything at about 2:15. I had a good time and liked the track, had 2 nice holeshots and held the lead for a few laps out of the 4 laps we ran. In the first moto, I bozo'd out and washed my front out and that pretty much put me in 3rd place...or last place
Second moto finishing order was the same...had a nice holeshot, held the lead for a couple laps then was passed for 1st and then on the last lap I ended up getting passed again for another 3rd...last again :0
Bottom line though...I had a good time and liked the track (even if it wasn't a 4 minute per lap GP track).