| Business Model | Online marketplace selling tours and activities run by third-party local operators | Online travel experiences and services marketplace selling third-party activities, attractions and transport | — | — |
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| Experience Types | Guided tours, day trips, attraction tickets, cruises and boat tours, food tours, outdoor and adventure activities | Tours and activities, theme park and attraction tickets, rail passes and train tickets, airport transfers, ferries, SIM cards, car rental, hotels | — | — |
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| Destinations Covered | Worldwide; more than 400,000 experiences listed | Global, strongest in Asia-Pacific; reported 60,000+ activities in about 250 destinations | — | — |
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| Cancellation Policy | Set per product; most use a standard policy of full refund if cancelled at least 24 hours before start; some custom (partial refund) or non-refundable | Varies by activity and provider; many offer free cancellation, some vouchers allow rescheduling within a validity period | — | — |
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| Payment Options | Pay upfront or Reserve Now and Pay Later on eligible experiences | Cards, Apple Pay and PayPal in most markets; local payment methods vary by region | — | — |
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| Loyalty Programme | Viator Rewards: earn credit on eligible direct bookings, redeemable on future bookings within 180 days; same-currency only | Klook Credits earned on bookings and usable on future bookings; member rewards programme | — | — |
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| Booking Channels | Website, iOS and Android apps; also distributed via travel agents and affiliate partners | Website, iOS and Android apps; inventory also distributed via partners such as Grab | — | — |
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| Customer Support | 24/7 customer service; in-platform messaging with tour operators | Online help centre | — | — |
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| Headquarters | Needham, Massachusetts, USA | Hong Kong (founded 2014) | — | — |
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| Parent Company | Tripadvisor | Klook Technology Limited (filed for proposed NYSE listing, ticker KLK, November 2025) | — | — |
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| Signature Products | — | Rail passes (e.g. JR Pass, Eurail), theme park tickets, staycation bundles | — | — |
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| Ticket Format | — | E-vouchers shown on phone; instant or delayed confirmation depending on product | — | — |
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