When your hired helpers might be having tired feet from snealing around in the dark, they might be up for doing some "walking" on their knees pretending to be elves!
Anything CAN "work" if you figure out how to do it, advertise it, sell it.
We often change up the tour here as we try to match the customer's expectations, desires, needs, according to what they tell us and what we see looking at us as they buy their tickets.
Of course all bets are off when someone lies to themselves and others in their group as far as what they Really want and then they become scared over some tiny shadow... and it's theirs!
If your customer head-count goes down, then it might be time to try harder to please them more?
Determine their sensibilities , act accordingly, see them come back brining others.