Now I can add my opinion under the OP XD
Set the Date
To kick things off, one of the most significant features of this expansion pack is the calendar. So, let's talk about it! The calendar includes all upcoming holidays. Each one includes traditions to complete that make progress toward your Sim having an awesome time celebrating. Plus, predicted weather conditions can help Sims plan ahead. You'll also see the schedule of your Sim's household while checking out the calendar, including when they have to go to work. And to make even more planning possible, Sims' birthdays will be featured on the calendar. Pop open some nectar (for New Year's, that is) because all this and more will be in one place. Now that's an organized Sims game.
can't say I'm very impressed with this significant feature. Obviously just my opinion but I don't see the hype around it.
I guess this is the new seasonal lot maker
Customize homes with a holiday pack and decoration box