I think with the new patch it's worth it if you want to throw a lot of wedding events. They are working better now. If not, then I would wait for a sale because the new world doesn't have much gameplay other than the wedding features.
It's very pretty. If you are someone who likes to just play on the lot your Sims live on, then you might like it regardless but I still think waiting for a sale is a good idea if you are not going to use the wedding features. I've enjoyed playing on my little beach micro home a lot because the scenery is really nice.