Agreed - although seems one of the Z4s is Sunday only? They are holding a Sunday event for 1st timers (mixed in with the regulars) it seems.
I'll be alone this time around (usually have a gang of 6 or more with me). Will have some rain tires on me just in case. There's a great mexican place called "El Guac" that I frequent for some crazy good authentic Mexican! Looking forward to that