The track wasn't bad. Gary thought it was rather rough and I'll agree it wasn't very smooth. San Marcos had a deluge of rain just prior to the event so the run off was muddy (which I completely avoided! No spins!) I had one 90° sideways moment and a few drifting moments but otherwise clean, so

The rain also caused a section of track to have a permanent stream running across which made things interesting. On Friday we ran counter clock-wise which is supposed to be more challenging. We started out the same on Saturday but then they flipped it on us a we started running clockwise. Clockwise was more fun to me as you have a turn where you drop down into the next turn as opposed to driving up. If the track was smoother, it would be an ideal Miata track.
The owners and staff were SUPER laid back about things which was surprising but I never felt "unsafe". There were no flag stations except at the pit lane. I didn't see an emergency crew although I was told they were there. There was passing just about everywhere with what seemed like optional point-bys but everyone seemed to be safe about it too. It's a wide enough track for Miatas to pass with relative safety. Most surprising part of the event is when I passed a HUGE old white Cadillac. I was like, "WTF is a Caddy doing here?!" Like I said, they were super laid back.
Given the chance I would do it again though. H2R has it's faults and idiosyncrasies but it's a fun track. I believe Tejas Miata Club is planning an all Miata HPDE for charity next year so keep a look out and put it on your calendar for next year.