Unfortunately I'll be out of town for work.  Flights and hotels are already booked.     
I haven't asked for a refund and I wasn't going to.  I figured I'd still do my part to help support the rain date.   
It sucks that it's so difficult to get enough people together to put together a track day, but the reality is that not everyone can just request additional days off.   It's unfortunate that so many people are having to back out, but I can understand their situations.