Und die Moral von der Geschichte? Kauf niemals Alkohol mit dem Vorsatz diesen ins Restaurant mitzunehmen. Das ist unhöflich.
Once upon a time there was an expat in Shenyang, who was very successful. Furthermore he had a beautiful, young Chinese girlfriend. One day she was telling him about a fantastic, new Italian restaurant, where she wanted to have dinner with him. She planned the whole evening - he bought a really expensive bottle red wine for the dinner. After a 40 minutes drive they arrived at their destination - Pizza Hut, here we are.
The morale of this story? Never buy alcohol with the purpose of taking it with you into the restaurant. That's rude.