By THÉRÈSE MARGOLIS After nearly two years of lockdowns and covid-19 social-distancing restrictions, Mexico is ready to reopen its doors to national and international travel wholesalers in its 45th annual Tourism Tiangüis next month in the southeastern state of Yucatán, federal Tourism (Sectur) Secretary Miguel Torruco Marqués announced last week. And this year, Latin America’s most important travel wholesale market