If she adds anything else interesting (I think she has some pics of the car crash set from Wednesday) to her blog, I'll add those here.
ETA: Sean just updated her blog, check it out for her full experience but here is an excerpt:
I must say that it was 1 AM when I met Zac and he must've been tired, he really is dedicated and thankful for his fans! He had been filming for almost the whole day and he still came out! If your reading this Zac, thanks for being amazing to your fans! We really do appriciate it.
Also watermelon04 has a set report here. Nothing really new, so I won't post it here but there are a few set pics (no Zac).
Oh and Sean twittered that filming on Monday will be, "at a bay, in a mining town, 1 hour and 20 minutes away from my house." FWIW, I have a feeling this is somewhere up the Sea to Sky Highway but I don't know for sure.
eta: Someone else has twittered he'll be over at Nanaimo on Vancouver Island, so idk which is right but there you go.
eta2: Sean updated and says Twatlight will be at Nanaimo and Zac will be at Britannia (which is up the Sea to Sky Highway and was actually the place I'd guessed based on her previous clue).