In the UK, when Oculus goes down, no coffee (staff tend to be younger people and perhaps not confident to set up a tip jar and ring the money in later).
A lot of Starbucks and other coffee outlets are franchise operations over here so it isn't actually run by starbucks and the counter may not run all the services. I wanted to have a meeting in a franchised outlet once and foolishly assumed that it would be possible to just run a check. It wasn't, but the lady simply got a box, I put £40 in and she rang each person's order through and put the change back in the box.
Initiative. People need to be allowed to show it when the system goes down.