D&D 5E - Princes of the Apocalypse Maps

I don't think you can see it on his site but the player version will be missing more locations to avoid spoilers.

I have the Starter Set so I can tell you the differences for that one (more or less)

Starter Set Player version map doesn't show:
Cragmaw Hideout, Cragmaw Castle, Wave Echo Cave, Agatha's Lair.
Not sure about Old Owl Well & Wyvern Tor without checking the booklet.

PS: The Starter Set region is just west of the PotA map you linked.
You can use it as a big region.
Just note that the scale is different.