@Ken ********
Terminology is important . . . . . if you are on the 1-year Extension of Stay Permit based on marriage to a Thai wife, you are NOT on a "visa" but on an "extended stay permit". The visa this Extension is based on, is already expired and invalid. . . . . . . . . . .So this stay permit would expire if you exit Thailand without a re-entry permit you can buy on immigration or at the airport, for this stay permit. . . . . a single re-entry permit can be had for 1000 Baht, a multi re-entry permit for 3800 Baht. If you do not plan to exit and re-enter Thailand more often than three times within the validity of your stay permit, the purchase of a multi re-entry permit is wasted money