I'm not a bartop VP player, but I'm seeking answers to questions a buddy asked. How do you know if drinks are comped? Is there a sign at the bar? On the machine? Do you ask the bartender? Also, it seems tipping $1 to the cocktail waitress is the norm for table games. What about bartop VP? Do you also give the bartender a $1 per drink? More than $1? Thanks gang!