The show was tonight, and it was a blast! 
There weren’t that many people in costume. Besides myself, I saw one other Eddie, two Riffraffs, a Frank, a Magenta, a Brad, and five or six Columbias. It being Halloween, there were a lot of people in other costumes as well - there was a couple in front of me dressed as the sailor and nurse from the famous V-Day photo, which was pretty creative. It was GA, so I sat center stage in the fourth row with my mother, who I invited along because she used to see the movie back in the day but hasn’t been since 1981.
Before the show started, the ushers were selling bags of props to throw and marking the virgins with big Vs on their foreheads. (I managed to escape detection.) The actors were all great in their parts, the band was great, the set design was very elaborate and made great use of the theater space - there was a box stage on stage left that was used as the Criminologist’s study, and one on the right that was used as the bedroom for the seduction scene. Characters entered and exited through the crowd at times, with the Transylvanians carrying Frank to the stage on a sedan-chair for the floor show. (Best use of the Transylvanians; during the driving scene, two of them were sitting in front of Brad and Janet and waving their arms up and down to represent the car’s windshield wipers.) Costume design and makeup was great too, with Frank looking exactly like Tim Curry, and the lingerie for the floor show being a perfect match to the movie. Instead of using a chainsaw to cut Eddie up, Frank beat him to death with his own guitar, which was a pretty funny bit.
There was definitely lots of audience participation from the beginning and I got into it pretty easily. The Criminologist was definitely prepared for some of the main callouts and had rejoinders prepared, for example;
“I would like -” “YOU WOULD, WOULDN’T YOU?” “Yes, very much so. …If I may -” “YOU MAY NOT!” “Well, consent is sexy and you already bought a ticket. …To take you on a strange journey.” “HOW STRANGE?” “Considering the current political climate, not that much really.”
I got a few laughs for tossing out lines nobody else did, such as “Buy an umbrella, you cheap bitch!” when Janet covers up with a newspaper, “Dying tickles!” when Riffraff shoots Columbia, and “VD!” when Columbia tells Frank she loved him “and what did I get out of it?” Lots of people were yelling out stuff on the fly and I was laughing my sides off for most of the show. (Best one: a lady yelled “Frank, what’s the secret to a perfect latte?” right before he shouted “Come!” My mother was actually surprised when everybody got up and started doing the Time Warp, since I guess they didn’t do that in her day.
It ran about two hours with an intermission, and after taking their final bow the actors got out in the crowd and did the Time Warp with the audience. I may have to see it again before the run closes this weekend. 