Your general demeanor throughout the interview will be what the employer will rely on most heavily in determining whether or not you measure up. Also, what you don't say in a job interview may open or close doors. Actually, research shows that most communication occurs on a non-verbal level. Many employers today are using Behavioral Interviewing Techniques. Samples of those types of questions are found elsewhere on our website.
Any experience is a plus.
Emphasize the big picture skills you learned in that job. Waitresses work under intense pressure, must communicate well and are excellent at customer service. Draw the parallel for the hiring manager. When asked for weaknesses, candidates sometimes choke. Plan and prepare your answers.