The actors did a fair job imitating the characters in the original TV show, and their interaction was fun at various points.
What I didn't like
Started off by being forced to wear name tags which served no purpose. The interesting gambit of putting vampires in Cheers was not well explained or exploited, and the whole concept of murdering a vampire was mushy. The audience was all but forced to participate in solving the whodunnit. The “immersive” and “particpation” aspects were low-key and forgettable. I blame most of this on the writing rather than the acting.
My overall impression
Disappointing on several levels. Concept had a lot of promise, execution was lacking despite a lot of effort by the cast.