. I don't really know for sure, but I have seen that you can pay an agent for a fast track if you don't want to take the risk of not being allowed entry and getting a refusal against your name
I arrived on April 30th on a 60 day exemption and extended by 30 days to July 28th. I then went to Vietnam for 5 days and when I returned to Thailand I was questioned at immigration. Luckily, a month previously already booked my flight to the UK. A second and more senior person was called to discuss my entry into Thailand and thankfully he allowed me to enter. I was definitely sweating 😓 for a while