Yes, you may bring a guest by purchasing a guest badge for $65.
The guest badge allows access to the exhibit hall, evening entertainment, and complimentary shuttles from the Mandalay Bay to the off-site events. The guest badge does not include access to any scientific sessions. Guests who wish to attend the Scientific Program lectures must purchase an additional badge, registering in the appropriate category. You may purchase more than one guest badge. For Onsite Registration, the primary registrant must be present.