Holiday schedules
American families observe different holidays with different levels of importance. The major ones that affect care schedules are Thanksgiving (late November), Christmas and Hanukkah (December), New Year's, Memorial Day, Fourth of July, and Labor Day. Some families also observe religious holidays, school breaks, and personal family traditions.
The question that matters most is: which holidays do you have off, and which are you expected to work? This should be clarified in your work agreement — but if it was not, ask early in the season: "Can we go over the holiday schedule? I want to make sure I know which days I am working and which I have off."