Yes, you can hire a car from National at Tamuning Guam Intl Airport (their address is East Arrival Section).
At National, you can cancel your car hire in Tamuning without any charge. However, for cancellations made at the eleventh hour, there may be a fee involved. If you have inquiries about fees and the agency's cancellation policies, you can contact National directly at any of their Tamuning offices. To access a comprehensive list of phone numbers, please click here and visit the Locations tab.
With 4 locations in Tamuning, National is a prominent car hire agency. Our user data indicates that their most popular location in Tamuning is situated at 105 Gun Beach Rd.