The requirement, which expands on a policy implemented earlier this year on its European itineraries, came into effect on Tuesday (7 September).
According to Jeremy Palmer, Tauck’s senior vice president of worldwide operations, the move comes as country’s entry requirements "evolve rapidly".
"We’re seeing a steady increase in restaurants, museums and attractions requiring proof of vaccination, to the point where unvaccinated travelers won’t be able to fully participate in their Tauck journeys," he added.
