Waitress - Meals received

Generally, the value of the employer furnished meals is not taxable to you if furnished on the business premises for the employer's convenience.
Generally, if the meals are furnished during the work period or immediately before or after the work period, then they are not taxable.
If the meals are supplied other than during the work period or immediately before or after the work period (such as on the employees day off) then the value of these meals are taxable.