@Yves ************
well, it also depends on your recent stamp history if your get allowed a visa-exempt entry.
In case you have already spent more than 120 visa-exempt days inside Thailand within the recent one-year period, the 60 newly admitted days would sum up to a total of 180 days, by which an Immigration official might come to the conclusion that you are misusing visa-exemptions for a longstay in Thailand.
If your travel history is nothing such, then you won't have any problem getting stamped in.
It is however always good to be prepared to show the famous three proofs:
*** 20,000 THB in CASH or equivalent in CASH (and in cash only) in another major currency
*** an onward travel proof out of Thailand within the 60 days you will get stamped in. Please be aware that the airline can ask you for such. Immigration normally is not interested in such a proof, and even in the TDAC digital arrival card, the “departure” section is not a mandatory to fill out information
Be careful, those cheap fake “onwardtickets” can get you denied entry. You better buy a cheap “real” flight ticket for a budget carrier one-way flight to a neighbor country
*** a booked accommodation for a few nights