Place meals before attractions
Mark when your family usually needs food, then fit the activity around those windows. A tour that finishes exactly at lunchtime still leaves ordering and preparation time. Don't assume food will appear as soon as you arrive.
Ask the venue about service and whether advance ordering is useful for a group.
Keep a simple fallback
Bring suitable snacks where venue rules allow them, and know where you can take a break. Discuss dietary requirements directly with the food provider; a general menu label may not answer a specific need.
Avoid promising a restaurant meal if the outing's finish is uncertain and the booking cannot move.
Choose the order that reduces waiting
For younger children, a shorter morning activity followed by a meal may work better than a long transfer at the hungriest point of the day. For another family, eating first may be easier. Use your own routine.
Put the meal stop into your day plan with the same importance as the main attraction. If the day slips, remove an optional activity before removing the break that keeps everyone comfortable.
Rules, fees and opening hours change. Confirm anything that matters before you rely on it.