I live, again I say we live, and also work as the organizer for the complementary fitness classes in our high rise building. We are located in a major city and I try to change up the “routine” classes regularly but have noticed many residents in the elevator asking we add more classes at post 8pm. Our 9 plus year experience has lent us to a very lax show at this time, has the industry changed and we missed it? Many of our one on one’s take this time slot they pay and are committed… are we missing the later night exercise groupies that need motivation? Or is this just a conversation starter so we welcome them into the earlier time slots with out remorse….
At the large Wellness Center where I teach classes, even classes at 7 PM begin to thin out. However, there are request for later classes. Initially people come but then it peters out.
Those classes can be highly instructor- and format-dependent.
I would first see what type of class people have in mind. If your survey gives you a very mixed bag of answers ranging from restorative yoga to hip-hop you may find it difficult. But if most participants have common interests, you may give it a try.