What browsers are supported by the Giamso Tours site? The Giamso Tours website supports the following OS and browsers: iOS 5.0- Android OS 4.0- Windows 7- IE9-, The latest version Google Chrome/Firefox Mac OS X 10.6- The latest version Google Chrome/Firefox/Safari Was this article helpful? Can't find what you're looking for? Inquiry Form Related articles How should I fill in information for passenger with name lack of distinction between the Family name (Last name) and Given name, or passenger who has only Family name (or only Given name)? How can I enable cookies? I cancelled my reservation but I have yet to receive my refund. I can no longer use the e-mail address I registered and I forgot my itinerary number.