The fun element has definitely gone this year. Currently binging season one as laid up poorly and there was an episode where the girls went off to a pod to choose a new boy to come in, while they were gone the boys built a fort/den and then 'attacked' the girls when they came back. There's been lots of silliness, messing in the pool and a lot of eating together, cooking etc. Also loads more flirting and swapping of couples.
So much more natural, yet there's definitely moments you can see are producer led, only less so.