While I don't know of any medical studies showing that children get sick more commonly on Sundays, it certainly does seem that kids come down with illnesses toward the end of aweekendorholiday break, just in time for school or even practically any time the doctor's office is closed.
So if you plan on slapping some pig on the grill this holidayweekend, sip a glass of red zinfandel (or even a pinot noir) to enhance those rich meaty summertime flavors.
Disney and DreamWorks are smartly releasing the film on a quiet holidayweekend where it can stand out and not get lost in the sea of summer or winter blockbusters.