1. If you have an open bar, and the usual fee for the bartender is waived, be sure to give him or her something for the road.
2. If the same bellman works the duration of your event, helps you cart boxes, or runs general errands for you, remember the effort with a bonus.
3. Your primary contact for all rooming needs, reservations managers should be tipped based on the number of guests you have, from about 200 guests for a single day at the low end, and up to 1,000 people for three or more days at the high end.
4. Typically not rewarded with cash, sommeliers should receive the equivalent of a specific monetary amount in a gift basket or gift card, especially if they lifted guests' spirits with wine tastings and education.
5. Tipping audiovisual technicians is a sound proposition, especially after they work a sound board, mic speakers, record sessions, run monitors, and more to make sure your event looks and sounds good.
6. Since security people are often off-duty police, cash can be construed as a bribe. So it's best to thank them with a gift basket or gift card.
7. With their duties ranging from reserving conference rooms to organizing banquets to arranging for AV equipment, convention-services managers earn their tip by being indispensable to a smoothly run event.
8. Just as you'd tip a server at a restaurant, each of the wait staff and banquet servers deserves something extra for their efforts at your event.