Radler, the German version of a shandy, is a big thing here. It's served everywhere. People can have a beer without getting drunk. Very refreshing.
Germany is totally cash driven. Credit cards are rarely taken. I don't have an ATM card yet so it's kinda an issue, although I do now have a bank account so I'm okay. Relatedly, I really need a change-purse -- forgot how annoying it is for coins to be worth up to 2 euros.