I guess the snark was out of line. I apologize if my comment seemed directed at you personally. Sometimes late at night snarky comments come to mind more easily than intelligent ones.

But it always irks me to hear comments equivalent to "the US (or the US market, US customer base, etc.) is more important the the rest of the world combined!!!", a statement with which I vehemently disagree. I imagine that you did not intend to insinuate that, but I just seemed to hear it that way.

As far as the calendar change, I really don't care one way or another, the confirmation page has always been quite clear with the day of the week, etc.

I think the deciding parameter should be the Hyatt.com user base. If most of the users of the Hyatt.com reservation site live in countries using Sun-Sat, regardless of where the properties are located, then would not that be the best format for the site?