Our friends are Canadian and American passport holders who now live in Mexico. Unfortunately they could not apply for a 60 day visa on line from there.
Can they arrive using the 30 day visa allowance and the flight booked to Cambodia for 60 days and the TM7 form for the next 30 days filled out to get into Thailand? They do not have a flight booked out at 30 days
TLDR : Answer Summary
The post discusses whether Canadian and American passport holders living in Mexico can enter Thailand using a 30-day visa exemption and extend their stay with a flight booked to Cambodia. Comments highlight that airline policies may require proof of onward travel, suggesting ways to circumvent potential boarding issues, including purchasing a refundable ticket. One commenter shares their experience of applying for a Thai visa from abroad, leading to a debate on the legality of their actions.