Even for point 1 it's just wrong. They should not work there for that wage and if the business needs to charge more money to pay them more then charge more money.
Relying on tips for worker pay not only shifts the responsibility for paying the employees away from employer to the customer but also makes employees getting paid optional (depending on how a random person that walked in feels).
Excuse me, I have a problem transporting this concrete bridge segment on my VW beatle. It worked fine with my Honda Accord (just made it a bit slow) but the beatle just gets crushed under it. Anyone can tell me how to make it work?
Edit: car type to make more appropriate comparison