transpac

Yes, you can apply for a one-time extension of stay, for up to 10 days, on a 30 day entry stamp. (I was wrong previously when I stated that I thought that this could not be done.) So yes, the OP could spend the better of one day dealing with Thai Immirgation officials, and pay twice what a 60 day visa would cost, which would cover the one-day overstay. However it would not address my primary concern, that being not having a valid visa for entry in the first place. I still suggest it is adviseable to obtain a valid visa even though the potential problems (denied boarding, denied entry, 500 baht fine) are miniscule at best.


LIST OF COUNTRIES ALLOWED A “30-DAY STAY IN THAILAND WITHOUT A VISA”
FOR TOURISM (pleasure) ONLY

Requirements :
- A valid passport (6-month validity with empty visa pages)
- A proof of confirmed air tickets showing 30 days or less in Thailand.