The waiter's shoes should be wrapped around the foot to prevent the oil from splashing out and burning the feet, preferably the kind without laces, so that in the process of your walking, the laces are open and dangerous, but now it's not so strict, wearing black leather sneakers is also possible, but if you are a new employee, it is still good to wear black foot wrapped shoes in case you get hit by the said socks are also required to be dark in color. The footwear similar to the ones in this picture will do.

Hope to help you!