It's a really amazing space. It's used for a lot of differnt events. The last two times I have gone for were to see bands... Here are photos from one of the show I went to. We made giant clouds:
Their contact is on that website above. I believe events have to be done by 10 or 11, which isnt a big deal. The events I went to, they didn't allow alcohol in at all beacause it was an all ages venue and it was a concert going on, but for a wedding reception they will probably be ok with it.
Here is a wedding I found outline that used it: http://www.stylemepretty.com/gallery/gallery/2089