1. Do you have a license? Why ask? This means the caterer has met local health department standards and carries liability insurance. 2. Do you have liquor liability insurance (if they're providing alcohol)? Why ask? Anyone serving alcohol needs to have this type of insurance! If your wedding guests leave your party after taking advantage of the open bar and injure themselves, you could be held responsible. 3. Can you provide references from previous clients? Why ask? Refere