Copying is pretty handy yes

They typically get paid below the state’s minimum wage. :(

Yes in the service industry where you will be served you very much likely would be expected to tip. So places may make this more obvious then others with a tip bracket on the receipt or signs somewhere.

Its also important to note most places in the US expect a 15% tip of what you spent but in some higher dense areas where the CoL is out of control it’s 20%