The minimum wage for service staff in the US is bonkers, and a great example of ‘if they could pay you less, they would’. I don’t know how often employers actually pay above 2.13 when they don’t have to, but I’ve read a lot more about being paid 2.13 plus tips than above that.
If this happens, push the ball of your feet up. The ball of you feet is the front of your foot connected to the toes, helped me many times.