With what is going on in Europe currently, the last thing I want to be in, is a big readily identifiable group in a public place.
It's actually impossible. I tried it for a laugh.
Some get stuck at security, some at passport, some in the loos and some elsewhere.
As someone already said, most of the time we are in a group large enough without effort.
Save your energy for OTP instead.
A lack of OTP harms the brand more than walking through an airport.