Thanks Brent for spreading the word so early! I actually am new to this forum. This is one of the few places that talks about The Empty Grave 2010. As a manager for this attraction I can help to answer any question you all may have. Brent has been spot on so far and is one of our go-to guys. To answer your question cosmic hearse, the average walk through time varies but it is about 7-10 minutes. We don't have large groups go through like Knott's Haunt, mainly because we aren't as busy as Knotts is, so we don't require a constant string of people. Each group is separated by about 2-5 minutes. I usually recommend groups of 2-4. If you came by with 3 other people, break it up into 2x2. The smaller the group, the more bang for your buck. Hope this helps.