If you have health coverage for 1 year, you will be stamped for 1 yr. I only had health coverage for 6 months so I got stamped in for only 6 months. You will also need to do 90 day report
Was at immigration today,got my 30 day extension. Then asked about the 6 days until I leave the country without visa, first I was told I would have to pay when I left for overstay 3000 , then another person told me that if I came back to immigration before my 30 days expired and pay 1900 and they would give me 7 days extension.