Exactly what is it besides getting their way that *doesn't* enrage extremist Muslims?
Of course about now even the tamest observant Muslims must be a little cranky, after almost a month of starving all day for Ramadan. I haven't been around enough Muslims for long enough to know what percent really observe it. I doubt that they're any better at living by their book than other religions are at observing theirs.
But one custom that's really easy to observe is Eid al-Fitr, which is at the end of Ramadan. Yeah, you'd do something special too after spending a month of long summer days without eating during daylight, whether you really observed it or not. It lasts 3 days, and this year those three days happen to include 9/11.
Ramadan and thus Eid al-Fitr are based on a lunar calendar, and thus effectively were scheduled for this year long before 9/11. So there's nothing deliberately provocative about the timing of Eid this year.
Even so, I'm hoping nobody does anything to enrage extremist Americans.