Can the U.S. Citizen sponsor stay in the Philippines while waiting for a K1 Fiancee visa?

This is a question we get every year? Many American guys want to come stay in the Philippines while they wait for their Filipina fiancee to get her U.S. Embassy Interview and then approved to receive a K1 Fiancee Visa to return to the U.S.A together. It can be done only by those of you who have an income while you are staying in the Philippines and someone back in the U.S.A can get your postal mail for you and send things to you online and in the mail as part of getting prepared for the interview?