From what I can tell, when the weathers clear BUT They are on the internet with contacts. We've held the last two SPADfests at that field and I've been up to a couple of the fall get togethers along with some other flying events. You can send emails to some of them by going to spadworld.net and emailing users Team Abbynormal, Varmit, Gravityisnotmyfriend (he's workign and in college so the first two are a better bet) but you'll get Jim, Scott or Nick off of the club website too. If you're on the spad site, go to the SPADfest folder and look at SF 12 and SF 13 photo and video threads, you'll get pictures and vids of the facilities.
If you have a closer club they'll know of it. Even if you do, you'll still want to visit. ALSO there is an indoor funfly coming up in February in Des Moines over at the fairgrounds, you'll want to get to that.
Hurray man, make the contacts. You've got to build this weekend for the indoor event and you won't know what to build unless you get in contact and you can't,,,,,
I kid, but as much lead time for an event is nice.
Here's the link for the event, it's on the 15th and 16th.