We can also see in this trailer that along with the finished effects, there's some different angles, takes, and digital grading than in he trailers. I'm assuming they've finished and this TV spot was made of the footage that came out of post production.
Addition of water
Good eye ref the monitors.
Also, the helicopter shot, there is also the addition of mountains, since Surrey is not noticeably mountainous, OR, it was not so much the addition of water and mountains, but the insertion of the Lodge into a mountainous and watery locale shot.
Not sure how these things work.