Yes reopening the country to allow tourists into the country again is the best idea to help the economic going again, it might take a bit of time but is a start. Reopening for fully vaccinated tourists is the best option, but it should be a straight forward and easy, like for fully vaccinated approval jabs tourists landed in Thailand shouldn’t have any other conditions like having to take a test or quarantine. If fully vaccinated tourists have to go through hassle conditions districts-ions for holidays they will don’t bother, they rather go a country that is hassle free to enjoy their holiday.