Visit a restaurant for a meal or think carefully about a recent visit to a restaurant. List

Question:

Visit a restaurant for a meal or think carefully about a recent visit to a restaurant. List as many activities as you can think of that would be performed by the restaurant’s employees for its customers.

Required:
For each activity on your list, indicate the following:
1. Value-added or non-value-added.
2. The trigger of the activity.
3. The possible root causes of the activity.