Corporate Event Managers have a certain degree of fame, there's no doubt about it. First of all, there are going to be a lot of people who want you to call them. There are convention halls that want to be filled, caterers who want people to eat their food, and local celebrities who want speaking gigs. If enough people want you to call them, there's some fame to this gig, right?
Secondly, you will be working to plan and pull off some of the most memorable events of people's working lives. When they think of the Sales Team convention in Tucson, they'll think of you. When they picture the head of Marketing belting out karaoke Springsteen (and they won't be able to stop picturing it), you will be to thank. Now that's fame.