today i crossed mae sot border for border run with metv before validity end, passport full of back to back tourist visas since 2015 ... very fast, friendly officers, out and in without any question
TLDR : Answer Summary
The user successfully crossed the Mae Sot border for a border run with their METV (Multiple Entry Tourist Visa) before its validity ended. The process was quick and smooth, aided by friendly border officers, and there were no questions raised during the crossing.