Hidden Costs in Hotel Contracts Every Event Planner Should Know

A hotel quote that looks 15% cheaper than a competitor often ends up 20% more expensive by final invoice. The gap almost always comes from the same dozen line items — and they are almost never volunteered in the initial proposal.

1. Service charge vs. gratuity — the double dip

European and UK venues frequently add a service charge (often 12-15%) on top of F&B subtotals. In the US and some luxury European properties, gratuity is then layered on top of that. Read the F&B terms line by line and confirm there is only one charge, not two stacked.

2. VAT / sales tax on the service charge itself

In many jurisdictions, tax applies not just to the food but to the service charge too — a 20% VAT on a 15% service charge becomes an extra 3% of the F&B bill. Ask the venue to quote the full landed cost with all taxes itemised.

3. Resort fees and destination fees

Common in the US, increasingly in Europe. A 'daily destination fee' of €25-45 per room per night gets added on top of the room rate. Always negotiate these out or convert to a flat package rate.

4. Setup, breakdown and changeover fees

Some venues charge separately for, late teardown, or room flip between sessions. If your agenda includes a theatre-style keynote flipping to cabaret for lunch, ask whether that flip is free or €500+ per room.

5. Audiovisual minimums and preferred-supplier markups

In-house AV suppliers often carry 40-60% markup versus the open market. If the hotel contract names an exclusive AV provider, either negotiate the right to bring in an outside supplier or ask for a flat package price upfront.

6. Internet and bandwidth upgrades

Complimentary Wi-Fi in meeting rooms usually means 1-2 Mbps shared across all attendees — enough for email, not for a live-streamed keynote. Dedicated bandwidth can cost €500-2,000/day. Specify concurrent-user count and minimum Mbps in your RFP.

7. Corkage and outside-catering fees

Bringing sponsored champagne? Expect €15-35 corkage per bottle. Outside catering is often flat-banned or carries a 100% facility fee. Clarify before your sponsors send product.

8. Shipping and storage

Receiving, storing and distributing attendee boxes can run €5-25 per box per day. For a 200-person event with a sponsor gift, that's a €1,000+ surprise.

9. Power drops and rigging

Any non-standard power (three-phase, high-amperage) and any ceiling rigging typically carries labour + equipment charges. Exhibitor-heavy events should budget this explicitly.

10. Overnight security and union labour minimums

Unionised cities (London, Paris, Milan) often require minimum labour calls of 4-8 hours even for short work. Ask the venue for their labour rules before finalising your run sheet.

11. Parking and valet

Per-car, per-day, and often not negotiable. For a 300-person regional event with heavy drive-in attendance, €30/car/day x 300 x 2 days = €18,000 that nobody budgeted for.

12. Attrition and cancellation — the biggest hidden cost of all

Not a fee you pay on site, but the clause that can wipe out your budget if attendance slips. See our attrition-clause guide for negotiation tactics.