The hills in LA are dotted with restaurants whose owners hope that a celebrity will walk through their doors. A celebrity citing gives their establishment the equivalent of thousands of dollars in advertising spend. The celebrity also legitimizes the restaurant; social proof that this is the place to be. Finally should the celebrity enjoy their experience they just may tell their other celebrity friends about it.
When a celebrity does visit the proprietors of these restaurants go out of their way to make the celebrity feel welcomed, special and pampered. Many of them offer the whole meal for free. Ironically if there were a segment of our population that needed free food it would not celebrities. But the restaurants do it because they can. They want to insure that their guest has something to talk about and nothing bad to share.
This same story happens with jewelers, designers, retailers and more. They all woo celebrities. Why do they work hard to serve one of the richest segments of society? Because their endorsement, tacit or otherwise means more in eventual revenue than a singular short-term sale would.
Each industry and profession has a small group of rock-stars. They are the well connected. They are very knowledgeable. They are the most innovative. They are the folks that your members want to connect to and be around. What these folks say or do is watched and respected. Their endorsement and their participation in your organization is worth far more than you can spend in advertising. What are you doing for your celebrity members?