Hey community — this week I want to talk about something that happens after almost every corporate event, costs companies real money, and almost nobody addresses. The final hotel invoice. Most planners receive it, compare it loosely to expectations, approve it, and move on. The event is over. Everyone is exhausted. Finance is waiting. The invoice gets paid. And somewhere in that document, often more than one place, there's money that shouldn't be there. This week I'm walking you through exactly what a proper post-event audit looks for, why most companies skip it, and how AI is turning a time-consuming manual process into something you can do systematically on every single event. ━━━━━━━━━━━━━━━━━━━━━━━━ 1. WHY THE FINAL INVOICE IS WHERE THE REAL MONEY LIVES Here's something 30 years in this industry has taught me clearly: the hotel negotiation doesn't end when you sign the contract. It ends when you approve the final invoice. Everything you negotiated - the comp rooms, the waived meeting space fees, the F&B per-person caps, the AV inclusions, the rebate structures has to actually show up correctly on that final bill. And frequently, it doesn't. Not always because of bad faith. Hotels are large operations with multiple departments, complex billing systems, and staff turnover. Errors happen. Charges slip through. Comps don't get applied. Rebates don't get triggered. The difference between the planner who catches these and the one who doesn't comes down to one thing: knowing what to look for and taking the time to look. The hotel is not going to call you and say "we billed you too much." That call never comes. But if you audit, methodically, against your contract, the money is almost always there. 2. THE MOST COMMON OVERCHARGES — LINE BY LINE Let me give you the specific categories where errors appear most frequently. These are the line items I look at first on every invoice: ROOM BLOCK & ACCOMMODATION • Attendees who cancelled before the cutoff date still appearing as billed room nights