So far, I'm loving this and I don't think I've even scratched the surface of it yet! I've tried building a houseboat for my Random Town Jump family (who are currently in Monte Vista but I followed the tutorial and built a port without any problems) and that's about halfway finished.
There's a lot of new clothing and hair (at least for YA women) but I'm not too keen on a few of the hairstyles. They look a bit too much like CC. Clothes were great though
Isla Paradiso is an amazing town and probably one of my favourites. Not many land-based houses though, but I suppose that's because the town is designed for house boats. I haven't actually done much interacting with the townies yet, except for somebody named Matthew Mango (I think).
I had a little look at one of the resorts, the one with the big tower (it was called Starlight Sands or something like that). The only (minor) problem I had was that a load of townies turned up in the check-in area at the same time as my Sim and she did the little stamping foot thing when she couldn't reach the desk. But the other guests soon cleared and my Sim got checked-in.
There are plenty of great new items, my favourite being one of the new loungers which is brightly coloured with toucans on it
I haven't tried building my own resort from scratch yet but I did have a half-hearted attempt to makeover Hobart's Hideaway (the run-down one that you get for free) but I got annoyed with it and scraped the whole thing. I enjoyed it though
So, overall, I'd say this was one of my favourite expansions so far, definitely topping Seasons, but obviously that's my personal opinion. I think it adds lots of great new features and now that I have them, I don't think I could ever play the game again without them