New Self-service Supplier Interface to Power Market-leading Distribution Through Viator and TripAdvisor Channels; Creates the Most Comprehensive Selection of Bookable Activities for Travelers San Francisco, CA, 2015-6-3 — /Travel PR News/ — Viator, a TripAdvisor company and the leading resource for researching and booking tours and activities worldwide, has officially launched Viator Marketplace, a new open-listing platform… Read the full press release