Wow - 30 already. So that's how you get students to study English - offer them alcohol ...
For the quiz - if you type in "wine quiz" to Google, lots come up, but they tend to include a lot of technical vocab. This one, however, is more basic and might give you some ideas : http://www.wineeducation.com/quiz/quizb/quizb.html
Other ideas :
- If you have a computer in the room, what about using a Youtube video? Type wine tasting
into the search box and lots come up
-If you want to get students talking more (before or after they start drinking, whichever you think would result in most fluency
) how about dividing them into groups and giving each group info on the wines of one country (several short texts so they each have something to read) plus a questionnaire which between them they have to compile. Each group then presents its results to the others.
-Are they liable to be wine drinkers already? If so I'd start the evening by getting them to tell each other about what wines the have drunk /usually drink/are their favourites etc. And /or an anecdote telling activity : What was the best (or worst) wine they've ever drunk? Where were they? Who with? What was the occasion?
Sounds fun anyway. Started me thinking how I could adapt it to my own students - a tasing focusing on wines from English speaking countries which likely to be less familiar with, perhaps. It's a thought for the autumn.