I get to update my own card. I have the choice between adding two marks or twenty. If I add twenty then I won't be able to buy the book that day. If I add two then I risk having not enough money for lunch. I throw the note into the machine, cursing.
Next step is to get a drink from the dispenser.
The dispenser has all nozzles next to each other. Only two people can stand next to each other drawing from them. I ask whether anyone wants ice tea. They all want Coca Cola. So I pass all and get ice tea.