Most of the time I think that's what happens when 'paperwork' needs done, just some Pinterest black holing.
Sugar content tends to get most people, especially on the mixes. You can tell serious drinkers from their orders (those Guinness and malt drinkers). Costs more, less likely to throw up and easier on the liver. You know, if you get free cleaning labour out of your guests, I think that's a bonus for the stay.