What's your Wi-Fi like? Is it RADIUS authed using the same credentials as people use for login/email/etc? Do you have different policies applied to different groups of people? Do your receptionists have the ability to generate expiring codes for visitors? Do you have to plug in when you're in a conference room to get a decent speed?
Wi-Fi projects can expose you to a lot of areas and the end result is a real improvement for the business.