I do like the Laundry Day pack, I use it in all of my saves, but there are a few things that I find a bit frustrating. The animation for sims carrying the laundry bag is buggy, I thought there was a fix for it that was put in a patch recently, but it was working properly for a short time, and then went back to the bugged animation.
The sims need to be instructed to turn on the washer and dryer, otherwise they will just put it in and wander off. I find that a bit annoying, they should just turn it on after they load it, like in Sims 3.
Laundry seems to accumulate quick, my Sims generally do a lot of laundry everyday, it truly seems never ending for a small family.. But I guess that is a bit more realistic? lol
I like the option of doing laundry by hand, but it does take a bit, the drying on a clothes line isn't much different than Sims 3. The machines seem to break frequently, I ended up getting a mod for it, and it breaks down much less.
I like the realism it brings to the game, and a lot of the CAS items are things that I generally use a lot. I get a lot out of the buy items too, the pack has a lot of really nice looking items.