Q → A → what they'll probably say
Short answerIn Germany, say Ein Bier, bitte. — A beer, please.
Q Was möchten Sie trinken? — What would you like to drink? (formal Sie)
They'll say Vom Fass oder aus der Flasche? — Draft or bottle?
"Ein Helles" is the southern default. Servers open with the formal Sie.
Q Vom Fass oder aus der Flasche? — Draft or bottle?
They'll say Welche Marke? — Which brand?
Q Maß oder Halbe? — Litre or half-litre?Bayern
They'll say Gute Wahl. — Good choice.
Size is its own question, asked after you've said what you want and whether it's draft. It's a Bavarian one: a Maß is the litre stein, a Halbe the half-litre. Order a Maß in Hamburg and you'll get a look. Die Maß is feminine, so it's eine Maß, not einen.
Q Möchten Sie auch was zu essen? — Want food too?
They'll say Kommt sofort. — Coming right up.
Q Zahlen Sie zusammen oder getrennt? — Together or split?
They'll say Mit Karte oder bar? — Card or cash?
Splitting the bill is completely normal and expected.
Q Was habt ihr vom Fass? — What have you got on tap?
Asking this rather than pointing at a tap handle is most of the difference.
Q Noch ein Bier? — Another beer?
They'll say Mach ich. — Will do.
Q Noch einen Absacker? — One for the road?
They'll say Na dann, Prost! — Cheers then!
Ein Absacker is the last drink of the night — literally the one that makes you sink.