The reason I have never asked anyone this question, is because there is no way that they would know that at this juncture.
Of course, everyone is hoping for the best, but the way the government works (as you well know) it's anyone's guess right now.
My guess, for the plug nickel it's worth, is that the bars will probably have to follow the same safety protocol as all other businesses, e.g. safe distancing, masks, etc., and possibly "vaccination certificate verification" at some point. Just a wild guess.