I needed a church key one day in an airport lounge.
I improvised with a sharp metal attachment on the bottom of the table. I was determined to not be kept from my beer.
They didn’t serve you beer in a glass in the airport? I used to carry iced-tea mix when I flew often, and ask for water at the bar or cafe. Since I was obviously underage in those days, sometimes an official-type person would ask what that dark drink with scum on top was, and I’d show my tea-mix jar and invite them to taste it.