For those who haven't used them before, Viator is a search site that connects people with various tour companies. They do not provide the tours themselves, so there is a certain level of variety in the quality and style of the tours they work with. Over the past few years, I've gone on at least a dozen tours in four countries, all except for one were great. One of the main perks is you can find a variety of tours in any given area. You can save yourself some money by doing the additional research to find the local companies, but it's a reasonably small amount they tack on so I've always chosen the time savings instead. The downside, is since they are third party site, they provide little to no customer support. After booking, the customer receives a voucher which includes the information for the actual tour guide. The ones I have received always include a phone number, none of them include an email. When trying to set things up in a different side of the world, an email would be helpful. You can request Viator to contact the local guide, they will forward the request but in my experience, Viator includes a snarky response along the lines of 'you have their contact information and that's your best bet.' Not helpful. Also, with the one tour company that did not provide the described tour, I requested a refund which two weeks later, I have not received a response. After waiting a few days, I submitted a one star review for the tour, with full explanation of the issues. The website includes a note for one star reviews, stating that their customer service team will review the issue and attempt to resolve it. As of a week later, I still have not been contacted and the review was posted three days later. So, if you are looking for a reasonably reliable search engine for local tour companies, this is a good option. Just understand, they are not the primary service provider and their level of customer service reflects this fact.