@Steven ***********************
so you got a 90-days Non-Imm-O retirement visa issued while you already had entered Thailand on a visa-exemption, for which you got stamped in for 60 days. And now you want to activate the Non-Imm-O Visa by doing a border run . . . . . . the Laos land border can be tricky, they might tell you can leave but to re-enter you must use an airport. So actually flying to Vietnam or Penang/Malaysia and back, might be better, make it easy for you, spend a week holiday in any of these countries but make sure you re-enter Thailand using the 90-days Non-Imm-O Visa before its visa-validity expires