Ordering drinks on a night out is generally a straight forward affair. I normally allow my partner to order the drinks for us, due to my lousy German and quite regularly I will allow her to pay as well.
What I have found is Germany is the only country I’ve been to in the world where I can repeatedly order a couple of drinks, for instance, a large beer and a white wine, that when the waiter brings your drinks back, he will stop and ask who the beer is for.
“Well sir, the litre of beer is clearly for my small lady here, whilst I sip on that tiny Chardonnay”.
Yes, it could be that way round and in Germany, it’s probably quite commonplace, but anywhere other than Germany, it is not particularly likely.