I hope you can choose what the customs and the usual activities are for each holidays you create, and that on the day, sims will tend to do those things. Not only your household and the sims on your lot, but all of the sims, even when you go on a community lot or at another sim's house. But at the same time I hope your sim doesn't stop doing whatever you commanded them to do every two seconds to do one of those activities, as can happen with the clubs. Actually I hope the sims of your household don't do the activities of the day autonomously. Just the other sims.
