Notice, that was Vespers. It doesn’t say what day of the week. If it was any day other than Saturday and not the vigil of a major feast, an attendance of 12 would be a good turn out even at a big urban church in a traditionally Orthodox country. In the early 90’s, I’m fairly sure the parish in Ben Lomond served Vespers and Orthros (Matins for you Westerners), and maybe even Liturgy, daily. A typical Sunday Liturgy at Ben Lomond during that time period would have had, I’d guess, between 100 and 200 Orthodox faithful.
Bingo.
We have Vespers on Wednesdays, although we sometimes sing Akathist in its stead on Wednesdays if there is a particularly moving story surrounding the Saint whose nameday it is.
Weds night Vespers we usually have 20-25 people there. Or course, we have a Weds night dinner as well...