My Sim's first attempt at "Moonlight as Mixologist" at Waylon's Haunt went great: my Sim was 'tending the bar' -> 'serve food/drink' until closing and everyone was happy.
Since then, my Sim cannot serve anything to anyone. Whenever she "Moonlights" at any location, the customers want to buy drinks and my Sim gets the 'tending the bar' action que along with 'serve food/drink' but the 'serve food/drink' que disappears after a half second. It's as if something distracts the Sim from ordering their food/drink, except that they don't leave and the 'serve food/drink' kind of flashes on and off until the ordering Sim gives up and leaves. The number of Sims standing at the bar ordering things at the same time does not seem to make a difference, as this happens when there is only one Sim or many Sims.
It's quite annoying because I was having so much fun with this!
Any suggestions?