Esta puede ser una opción si estamos hablando de las jóvenes que se dedican a distribuir folletos y otros materiales promocionales en este tipo de eventos y que no son necesariamente vendedoras de esa empresa en particular.

http://www.jvainc.com/convention.asp

"Hostesses / Hosts
Make your Trade Show booth, hospitality suite, or special event more successful by utilizing these friendly and gracious professionals. They will be at your service to greet customers, distribute promotional materials, gather leads, serve food or beverages, or be on hand to assist your staff so that you are free to spend more time with your important clients."

Obviously, only suitable for a very informal register.

agent:
The instant 'agents access' means that the business will go directly from the ... the new free Snap2Travel app to your customers when handing out brochures ...
www.snap2travel.com/travel-agents/advantages-for-you/ - En caché
How To Understand Brochure Printing | How To Do Things - [ Traducir esta página ]A "leave-behind" is the brochure most agents hand out after presenting their product to a potential buyer. It's meant to reinforce and remind your prospect ...
www.howtodothings.com › ... › Hardware › Peripherals - En caché
Perhaps the easiest way to network is through all the contacts that an agent will make handing out business cards, brochures, and literature ...
ezinearticles.com › Real Estate › Marketing - En caché - Similares
Melissa Hoyer: The Art of Plane Speaking - [ Traducir esta página ]2 Jan 2010 – ... can answer – as opposed to the ones who sit behind an agent's desk handing out brochures while their computer constantly says “no”. ...
www.australiantraveller.com/component/.../4460 - En caché - Similares

Saludos
eski :))

There are other options in the link:

http://en.wikipedia.org/wiki/Promotional_model