I would recomend doc tap. I am going to use them this week. You can get a test for results within 3 hours for £190. Or next day results for £150. Doc tap are also on the approved list of pcr covid tests for entry. Its a small extra price to pay for it all to go smoothly
They shouldnt be offering flights when they are not on the list. Call them asap and push for a refund due to that. So you are able to book a flight with an airline on the list
that is true. Ryan ive never been asked for proof of anything on any trips to thailand if i can remember rightly. I will withdraw some pounds and exchange them over to baht for my trip to be safe then. All though its better for me to always use my bank as they offer free withdrawals in thailand and free debit card use :)