Educate Your Staff (and location staff!):
Your staff as well as those in locations should be knowledgeable about the games. This will help when interested players might have a question about how to play or if the game is “good” or “fun.” Having a staff member there able to say, “yeah, it is a great game, let me show you how to play it!” can turn someone interested in playing into someone who can’t stop!
Educate Your Players:
When you get a new game, do you just place it in the location and hope people want to play it? If you are, then you are missing out on a great promotional opportunity. Try placing posters in the bathrooms, on the front door or even tent cards on the tables.