To save on exchange fees for major currencies, uers can make bookings in their local currency in Australian dollars, Canadian Dollars, US Dollars, Pounds or Euros.

Viator customers can leave reviews for the activities they participated in to help would-be patrons make their purchasing decision.

Round-the-clock customer service is available, according to Viator.

Pros: Helpful, clean layout for easy navigation, low price guarantee

Cons: Could accommodate for more currencies