A single beverage cost percentage can look stable while liquor drifts and beer covers for it. Separate categories make the variance visible — which is the first requirement for figuring out whether it's over-pouring, comps, pricing, or shrinkage.
Comparing a month with five Fridays to one with four isn't a comparison. Fiscal calendar support — 13-period, 4-4-5, 4-5-4, 5-4-4 — puts the same trading pattern in each period, so period-over-period movement means something.
Bar labor isn't only bartenders. Security, door, and support hours scale with the night, and they belong in prime cost next to beverage cost — where you can see whether a busy night actually paid for the team it took to run.
A big event night carries costs an ordinary Tuesday doesn't. Custom reporting lets you build a view that isolates what an event produced against what it took to put on, rather than folding it into a monthly average.
