You can add a guest(s) onto an attendee's registration for $85 for those over the age of 18. They are allowed access to the shuttles, nightly entertainment, and the exhibit halls.   Those under 18 will require one to visit the exhibit hall, shuttles and nightly entertainment but there is no charge for these.  The maximum guest badges is 4 for registrants.  2 for exhibitors. THESE ARE NON-REFUNDABLE.