Air time is additional.
You ve seen it happen. You give your visitors a few hours to explore the city and they promptly get lost. Or they go somewhere and need you to pick them up because they don t like public transportation. Rent them a cell phone and your phone number so they can maintain the connection to you they may need for those adventurous forays into the city. I never had to use the phone Sage rented for me, but I felt better knowing I could always reach her in case of an emergency.