What is hosting a visitor?
The term “hosting” means bringing a visitor to your home for dinner, which allows the international visitor to join in the “American Experience.”  The dinner can be a simple New Orleans meal such as red beans and rice, or as gourmet as you would like. 

The purpose is to share a part of your life with the visitor, whatever your lifestyle may be. The only requirement is that hosts pick-up visitors from their hotel and bring them back after dinner. 

More details here