It's great when improv is encouraged. It's a really fun thing. It depends on who's in the movie and how their process works, as well. It takes a director who is open to that because you have a script, but then something funny could happen on set. So, to have people around you who encourage improv is really exciting.
The greenhouse scene! It was just so fun to have the romance and the action.
I've only ever known growing up across different countries - to me it's just fun.