Which is kinda not helpful if you're starting with a new AP and have to wait 6 months to get that last volume.Another thing about the APs is you really need to read them in their entirety to successfully run them. You dont need to memorize every map and NPC per say, but you should definitely be familiar with the adventure synopsis of all parts. Some folks fall in the trap of thinking they can go module to module and the APs dont work like grandpappy's modules of the 80's and 90's do.
I am in the position to be able to read through all of Abomination Vaults, and I have at least skimmed all of it.
PF APs definitely aren't for the inexperienced GM. Of all the ones I've seen so far for PF2, I think Abomination Vaults is the most newbie friendly.