Field note
Sampling through banquet weeks
Equal-weight random draws look tidy in a plan—and quietly miss the week your catering team booked five weddings and two conferences.
Hospitality expense governance fails when auditors treat every calendar day as interchangeable. Banquet weeks change vendor volume, overtime claims, floral purchases, and last-minute beverage runs. If your sample ignores that density, findings skew toward quiet Tuesdays.
Start by tagging high-load days from the banquet diary, then allocate a larger share of your sample to those dates. Document the weighting rule in the workpaper so an external reviewer sees intent, not bias. Pair the draw with a short narrative: which outlets spiked, which vendors were new, and which approvals were rushed.
In Cloudflowpro labs we practice this with anonymized diaries from mid-size hotels in Taiwan(China). Learners often discover that two “ordinary” expense lines were actually split invoices from the same caterer—visible only because the sample leaned into the busy window.
Keep a floor for quiet days so you still catch slow leakage. The goal is proportion, not tunnel vision. When the quarter closes, compare exception rates between weighted and unweighted weeks; that delta becomes evidence for next year’s audit plan.