We stay for 6 months, I always have a return ticket in 6 months, but I have a history of arriving with my wife, a dual citizen, as Balikbayan,, never been questioned. My friend who was denied boarding by PAL last November at JFK thought he could get Balikbayan because he had previously entered with his wife, but she was waiting for him in Manila this time. Told them his wife had their return tickets. Had to reschedule and get a throw away 29 day ticket.,