30 million ? Genuine tourists ?
OK, Possible, Yes, like, no.
The world is NOT going to spring back to normal and near to pre-pandemic levels in 2023. For one thing people have debt from covid, fear of travelling and getting stuck, looming world wide recessions , utility bill rises and inflation and flight costs. Also Thailand is currently making itself less attractive by the day with fees and double charging
I'd day 7-8 million best this year, and 15-18 best next year, I cannot see Thailand hitting 25-30 million until 2025 at the earliest. 40 million maybe 10 years from now with some creative migrant accounting