The field course is fully catered, but you may want to bring snacks or supplements.
For a sample menu, here is the menu for Sept 2024:
Breakfast
Lunch
Lunch is a packed lunch (sandwiches, fruit, snack), which you will make up yourself in the morning around breakfast time. You must bring a lunchbox to store this in through the day, and you must also bring a water bottle to refill with tap water.