Those that get pissed off don't get hired again. Use the tips above passerbys and to explain to them how they are going to handle questions and what your expectations are. The bottom line is that when they are on your time, your business is the one they're permitted to discuss.
For instance, if you are doing a shoot at a company and you hear the Director of Marketing discussing that they need another video for a related product or service, you need to telephone the person that hired you (if they aren't already on the shoot) when you get a break to notify them that you just overhead this information.
Talk to your viewer/audience - Your video production is not about you it's about your own audience. Each question and framework of this video must have this in your mind and be relative to your target audience.
Speak with your attorney about how to structure the agreement so that it is binding in your state. The freelancers who are uncomfortable signing this non-compete are not the ones you want working for you. You want people working for you that will depend on you to bring them more work. The ones that want to steal your clients have no business stepping foot.
If you're shooting at wedding that was reserved by another videographer, don't even consider promoting your company in the wedding and reception. This is a situation where you check it out should have a handful of cards to provide prospects who are interested in learning more about wedding video services.
Video content on the web has taken off in the last couple of years. When YouTube first came out, it was a site to watch videos of cats click site playing piano. Now it is a place for creative minds old and young to share their visions. The quantity of quality content and amount of users has skyrocketed since its inception. Video on the internet is becoming more prominent on company websites. Businesses entertains the viewer as well as can showcase their products and services. Video is being used by Organizations as a means to drive customers to their sites in all avenues of the marketing campaigns, and it's working.
Clients will automatically believe they are all employees, providing the illusion that you are a larger company that you actually are and read this will be impressed.