I wouldn’t mind seeing the bar game expanded upon, not just new animations but the game made a bit more elaborate. Right now, it’s a bit too easy to get everything right.
Maybe have more than just two options, include some kind of timer mechanic (so if you take too long getting and returning orders, you get in trouble). Allow/Require/Incentivize the player to take multiple orders at once (so that the player has to try to keep everything straight in their head).