"Rock Paper Scissors" is a game where after a count of 3 (or count of "Rock, paper, scissors!" two players make the shape of rock, paper or scissors with their hands at the same time and see who wins.
Paper wins against rock, scissors wins against paper and rock wins against scissors.
Its a pretty common idea in RTS games, where for example swordsmen beat spearmen, spearmen beat cavalry, cavalry beat swordsmen, that sort of thing. In this case I sort of meant maybe three different actions you can do with different types of customer, that if you get right you maybe get a boost in popularity/a better rating, or maybe a cash tip etc; but if you get it wrong it goes the other way? Maybe also a "neutral" reaction where nothing changes?
Only put it out there as I saw in another comment you were thinking of building on your game a little more after the jam so I thought I'd throw that idea out there just in case it gives you an idea in turn :D
All in all I think what you got done is pretty great especially for 7 days, believe me I understand the crunch of such a small timeframe hahaha