I'll try to call this week to find out how much it costs per run as well as make sure those dates are not reserved by a party rental or something. Actually, I'll stop by and maybe get a little track time while I'm at it. Their site does not have on demand prices up. Just the $1000 for 15 karts rental price on the weekend.
It's been a few years since I have been to Arnold's but I can tell you that it is a blast. Getting back into our cars will be a disappointment after karting for a while.
None of those dates are specifically bad for me.