The number we'd lead with
Tuesday lunch is running at 31% of capacity, while Friday and Saturday evenings hit 97% with a waiting list. A set lunch on Tue 12-3pm at £14.50 would be cost-neutral above 8 covers and you've already turned away 4 walk-ins on that slot this month.
Backed by 87 days of your own bookings data, cross-referenced against Met Office temp + rainfall and local competitor pricing scraped weekly.