obviously you haven't worked fast food.
You should be able make a stock pile of burgers and fries like just have 10 of each sitting around. Fries you should only have to do the rotation thing for a bag of fries not for every single one. the drinks you did right. Also you need to pick up the pace of the game its way to slow. Make it so the customers come fast and get to line up and then if you mess up their order they just hold up the line so you cant get anything done and the line just gets bigger till you lose. but all in all you had a good game. I just reminded me when I worked at Mcdonalds.