I advise any prospective future travellers to avoid Viator like the plague I forgot to read all these negative reviews before I booked a shuttle bus to pick us up from the airport in Hawaii to our hotel. We were out waiting in time for the pickup but no one was there for us > We walked up and down all the shuttle buses asking over and again as to whether anyone knew who was supposed to be there,as on the confirmation they sent us they did not name the company that should have been there. After 2and and half hours we finally gave up and paid another shuttle $55 American on top of the $55 we paid to Viator. I have been trying now for over 4 weeks to have this resolved, to no satisfaction , then today I finally get a message saying they were not going to refund the money. Not even an explanation or excuse as to why we did not get the service. They also had the cheek to say "we hope you use our company in the future" Fat chance of that happening