I'm new to Chicago, and have never seen so many restaurants with BYO policies. I assume this means the restaurant doesn't have a liquor license? My question is, what are the rules with regards to bringing your own alcohol? Can you bring anything (i.e., beer, wine, liquor)? Are their corkage or other fees related to serving you the alcohol you bring? Do we assume the restaurant will have the proper stemware for wine, even though they themselves don't serve the stuff? Thanks in advance, I just don't want to commit a faux pas due to ignorance about how BYO typically works.