In response to the letter about not being able to live off of measly tips: Your employer is required to pay you the difference between what you make in tips and the current minimum wage. He is required to pay you at least $2.13 an hour, even if your tips add up to be over the minimum wage. If you are not being paid what you are entitled to, you should file a complaint. That is illegal, and they will make him pay you any back wages to which you are entitled.
Your letter implies that you are only paid $2.13 an hour, and if you only receive a few dollars in tips on any given day, that is all you have to live on. You are guaranteed minimum wage, even if you never receive a tip. You can make over minimum wage if you earn enough in tips.