Our server mentioned that tomorrow (Christmas, so you’d think a lower volume day, even for the winter) they were expecting 120-150 people throughout the day. Those numbers don’t mean anything to be, but perhaps others can extrapolate based on the 6-7 hours the lounge is open, the capacity, etc.
I believe 120 is max kounge can handle at one time. They vastly undersized the lounge fir the demand. Thus why AF/KL J cant use even though they are supposed to.