I dine at small, family run BYO's very frequently. For the most part, I don't really get much in the way of "wine service" at many of them. While some will open the wine and periodically top off my glass, for the most part I'm on my own. To be honest, since wait staff usually aren't versed in handling wine, I'd rather take care of everything myself. I bring an opener, Riedel O's (if the stemware stinks) even small decanters (depending on the quality of the wine). There's really not much for them to deal with here.
That being said, what is a fair tip for the wait staff in these situations?
I feel like this had to have been brought up before, but a quick search didn't turn anything up.