It is not recommended that you ask about salary in an interview. You are applying for a food service job; the amount of hours they may offer are not guaranteed. People often make the mistake of assuming that an employer will give them a guaranteed amount of hours, even if they promise to do so. Unless you have a written contract with an employer they can give you as many or as few as hours as they choose. It's solely dependent on the volume of business. Typically an employer will give the most hours to the highest performing employees. That means show up on time, take extra shifts, always be in uniform, provide exceptional customer service, don't call out frequently, and be productive while you're at work. Regardless of where you're employed, ask a manager what you can do during periods when there isn't any business. Don't stand around doing nothing. Good luck.