you're a LONG way off from coming here and unfortunately the 45 day visa exempt program goes back to 30 days on April 1.
Delta is not correct, a visa isn't required to get in to thailand, BUT if you're coming here visa exempt they may require you have onward travel in the number of days you're stamping in for (which in Aug 2023 will be 30 days).
My advice is; watch the visa exempt program and see what happens at the end of march (as far as if the 45 days are continued or not) and if it's not, get a single entry tourist visas from the online eVisa portal people in the US use. That will get you stamped in for 60 days.
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