Social media

Staffers are a common sight at events, and some event producers have put hashtags on the outfits worn by greeters, caterwaiters, or even hosts. In February, the South Beach Wine & Food Festival advertised its official Twitter phrase on the T-shirts worn by participating chefs like Rocco DiSpirito.

A more subtle approach is to use the hashtag on the cocktail napkins. The organizers of Travel & Leisure's first Social Media in Travel & Tourism Awards (the Smittys) in New York on June 7 made sure attendees saw the hashtag when grabbing a bite from a passing waiter or when taking a cocktail from the bar.

Bars are almost always the most crowded areas of an event, and in addition to displaying the affair's signature cocktails, drink menus can be marked with a hashtag.

Hashtags get noticed in places where guests spend much of their time on event day—and where they have physical space and incentive to hang out. Certainly, a photo activation is a compelling incentive: Evian's photo activation at the South Beach Wine & Food Festival in Miami put a hashtag right above the action, where it was sure to make its way online.