Did "home" based ACMI a few decades ago. Was in the process of moving to the US. My legal residency was my parents house in a country I visited 10 days a year. My wife lived in the US, and I got to spend 4 days twice a month there. Work was the same hotel in a different continent, two ten day trips a month. I would walk up to the desk, they would go "ah mister Simian, welcome back, here is your key, here is your mail" without me having any ID out.... Did that for years....