Will I get carded for bringing my own bottle (I know about corkage fees) to a restaurant?

Although some restaurants can bend the rules now and then on other issues if you are a good customer or spending a lot of money, they will not look the other way on this issue. If caught opening your alcohol and letting you consume it on their property, they could be met with a stiff fine and perhaps even lose their liquor license. I can tell you that the restaurant is not going to jeopardize their business regardless of how goos a customer you are or how much money you spend. No way. I'd suggest you wait until you become 21. It also would be embarring to you and your guests to face a problem on a special evening.