I'm pleasantly surprised at how much game play there is in this EP - I didn't think there was much they could do with a tropical theme that would be more than just another vacation spot. I want stuff my Sims can use in everyday life, not more vacations.
I'm very happy to see part-time jobs enabled for adults - that's something I've wanted for a long time. (I believe that will actually be in the patch, with the new part-time jobs only available with the EP, but the point is, they did this because it was needed for the EP.) I'm also excited about the off-the-grid lot trait, and it sounds like there are some interesting new aspirations and possibly traits? (I'm trying not to get too spoilt, so I'm only reading certain threads.)
And, most importantly, new things for my toddlers!