Transat A.T. (TSX-TRZ.B) spokeswoman Debbie Cabana confirmed Thursday that Canada’s largest tour operator is adding a $35 currency surcharge to sun destinations and Florida effective Jan. 27. Published reports say Sunwing and Air Canada Vacations are also both implementing $35 surcharges to offset the falling loonie — Air Canada (TSX:AC.B) effective Jan. 27 and Sunwing effective Jan. 30. Sunquest, a…