Share your whole vision.
It is important to communicate your vision to your caterer. The colors, theme, flow, and ambiance you are trying to create. Your caterer can help enhance your design. From customizing your menu to the platters they bring and rentals for your tables. It can cause dissonance in the ambiance you are creating if any of your vendors are left out of your vision.
Ask questions about the service and presentation.

- How does service go, what are the steps throughout the evening?
- How do you manage your servers?
- What is the price of servers, and how many do you bring for each style of service?
- How does your staff dress? Do you have presentation/grooming standards?
- How will clean up go? What are you responsible for and how late do you stay? It is important to know if the caterer does or does not clean all the dishes and stemware from the tables throughout the event.