Ordering drinks: When the bartender finally gets to you, have your order ready. If you're with friends, find out what each of them is drinking before you even try to get the bartender's attention, then try to put the drinks into some sort of order.
It's usually best to start out with cocktails, move to wines, and finish with beers since cocktails take the most time to make. Wine comes next, taking very little time to pour. Beer comes last so that it has a healthy head on it when the whole round hits the bar.
The etiquette for both beer and rice wine is pretty simple, and very important. It is very easy to give offence by appearing to be ignorant. But first you need to order the beer...
Chinese beer normally comes in 640ml bottles, and each one will fill about 3 standard Chinese glasses. The strength is usually around 4%