- This gives insight into how the planner interacts with vendors, their network and contacts in the industry, and how they ensure everything runs smoothly on the day of the event. 4. **Can you provide references or testimonials from past clients?

- This gives insight into how the planner interacts with vendors, their network and contacts in the industry, and how they ensure everything runs smoothly on the day of the event. 4. **Can you provide references or testimonials from past clients?