Down Under, many dining outlets actually do not have liquor licenses, but they allow customers to bring their own, and some will even advertise it on a sign board. In the US, BYO laws really depend on the state, with some like Colorado simply forbidding it.
Meanwhile, the restaurants that do have a license and accept BYO will charge you a corkage fee if you do bring a bottle. This to cover to cost of glass rental, service, and yes – making up for the money they would have earned if you bought an actual bottle there.
In Europe, it is fairly uncommon, even if it is allowed. To be sure that the restaurant accepts BYO, it is better to call ahead to inquire. I have to tell you that you won’t receive the most friendliest welcome if you just show up at a restaurant in France with a bottle.
In Malaysia, it is fairly acceptable in a lot of places. Many restaurants that don’t want to stock up wines actually do not charge corkage fees, but you often end up with small, cheap wine glasses. Others will charge a corkage fee, but the staff will take care of the service and give you much nicer glasses (normally!).
So here are a few tips when you want to bring your bottle to a restaurant:
• Plan ahead!
Call beforehand to check if they accept BYO and ask if there is a corkage fee so you're not surprised when you get there (I have seen corkage charges anywhere between RM25 and RM100 in KL)
• Bring something nice!
I agree that some restaurants abuse the mark-up on their wines a bit, and serve some wines which aren’t the nicest at a fierce price – but if you bring your own wines at that price range plus corkage, you will have a better experience!
For example, if a restaurant charges say, RM50 a bottle for corkage you can bring a lovely bottle of Monte Da Peceguina or one of our new Chinons and you'll only end spending RM150 or less on a really good bottle as opposed to their cheapest wine for the same price.
• Get to know the team!
If you are familiar with the team (owner/manager/waiters), it will be easier for you to bring your bottle in the future. Have them try your wines if you have a special bottle, and you will definitely make a friend!