I am on tourist visa now. Already did the 30 day extension and it's ending on 15 may. Wife had problem with her visa so we couldn't fly before then. Flight is on 20 may. Can I go to immigration so they can help me or should I do overstay and sort it out at the airport?
TLDR : Answer Summary
The poster is currently on a tourist visa set to expire on May 15, but their flight is not until May 20. Though they are considering overstaying, commenters strongly advise against this. Instead, they suggest visiting Thai Immigration to apply for a visa extension, which will likely be denied but may grant a 7-day grace period to leave the country. The cost for the application is 1,900 THB.