More foreign visitors reported after free visa scheme     BANGKOK, 19 November 2018, (NNT) - Thailand’s northern provinces have seen an increase in the number of foreign visitors, thanks to the government’s free visa on arrival campaign.  Wiwat Piyawiroj , Executive Vice President of Commercial at Thai Airways International Public Company Ltd, said the free visa on arrival scheme for 21 nationalities has boosted the number of foreign visitors in Thailand’s north, particula