This has been annoying me for several months. Does anyone else try to use this feature on the website from the link provided in the email confiation? Sometimes (rarely) it downloads a .ics file that I can import into my calendar. More often than not it takes me to a web page to find my reservation. Once I add my confirmation number or log in, there's no option to generate a .ics file. I add the calendar entry manually but I would rather not type it all in again. This feature used to work fine. If there is a calendar download option somewhere on the Hilton website for existing bookings I'd be grateful if someone would point me to it. Thanks.