Define the calculation clearly
Average check is revenue divided by guests for the selected scope. A guest count of zero does not support a valid spend-per-guest inference. For several venues, divide total revenue by total guests rather than averaging each venue’s average check equally.
Review volume before explaining the movement
Average check can rise while revenue falls if guest numbers decrease more sharply. Read covers, revenue and average check together. A lower figure may also reflect a meal-period or category-mix change rather than weaker individual sales performance.
Compare periods that describe similar trading
Lunch, dinner and beach services have different spend patterns. Compare consistent date and venue scopes and review unusual events. Without a suitable comparison, a change in average check is a signal to investigate, not proof of price or service failure.