At least during the hours you are open, you have processed 2 to three times more people, not that the same people do this then this then this other thing. Rather than 2100 people a night in one hard to process line, your closing hours break that down to 700 per event in a strict time segment. For the most part, 9:30 is half an hour past when those of nights see a stop in big traffic anyhow. Yes, were closed sorry, here are some coupons and the times are here.
Encourage early attendance with some "happening" only between the early two hours, a band, a celebrity, a bonus for showing up early, a costume competition. Don't stand in line if you have a combo ticket, hit one of the other attractions that has a lower line in the FaQ section of your web page and perhaps post these entertainment tips on all the ticket counters.
I have seen the mistake so many times that I do not understand. There are 3 haunts or thousands upon thousands of square feet and you are supposed to begin here then go into here rather than exit the building to get in another line and another open door.
You end up increasing even more customers as they are not put off by a line that may take hours to process. If you have a fast pass system, you intentionally hold entry back so there is a line even when there doesn't need to be one. If people didn't make it through all three attractions when the last hour is run at top speed, they should come back another night and buy more tickets to see what they missed. If they came earlier they would have seen this and this and the other thing. Come early!
People have already been trained to get in the line that has the fewest already in line by grocery stores. All you can do is talk up what fun things happen around 8 o'clock, they should have been here. You don't have to discuss it is past people's bed time or the state says they all have to be back in lock up by a certain time or what ever negative crap.
I have been through some amazing haunts that if you time the really checking out the detail and enjoying what is around the next corner is 20 minutes that feels like an hour but just walking through at a regular pace not paying any particular attention only really takes 2.5 minutes. This 2.5 minutes times three with a little walking in between only takes half an hour to hustle people through and there might not be as much of a show with all 100 actors. Too bad. A great majority 95% will have been impressed enough to have increases in attendance every year.
Another fabulous post from the U.S.Department of Wild Imaginings, now in spectaclar stereo, sponsored by the Adhesives and Sealants Council, suggesting ways to stick things together since the 1800s. Not fabulous in a gay way. Your results may vary. Illinois residents add 8% sales tax. These posts have been made by professional post makers, do not try this type of posting on your own without extensive training, lovely assistants and a trusty clown horn.