I had been scouting twitter and dugpa forums when they were in Washington filming in 2015 on when and where they were shooting, there was even an article put up on a Everett (city where the Palmer house is located) paper announcing the night shoot, and that residents of the neighborhood should expect to hear
in the early AM. The crew allowed fans to watch a lot of exterior filming at different sites, but obviously you weren't allowed
on set, though you could still see enough to make out who's who. Kyle even came over to say hi to the group of us at one point. It was incredibly exciting.