Just finished Part I and what a stunning contrast it is to Let It Be (movie). It's vibrant, it's human, and it's ...definitely for Beatles die-hards who pour over the fly on the wall segments from the Anthologies and Let It Be ...naked. I can understand that two and a half hours (just for part 1 out of 3) sitting in with a band practising for a show that they have no idea if they even want to do is a lot.
But as one of those guys (who own several copies of every album and multiple box sets), - though also of the opinion that there's far too many Beatles documentaries - I am very very happy that this now exist. I fully understand the aversion to killing your darlings when it comes to this absolute treasure trove of previously unavailable and incredibly candid footage (and audio), but I think for most the planned theatrical cut will be quite enough.