I want to try and test it out today but I kinda get three feeling three whole island and raid environment is basically one big instance, meaning even if u hacked ur way past the drones guarding the island or flew a drone over the boarder ull see just what was seen befor raid release. A map with a few wondering mobs but no openable loot crates, no intel or objectives.
Idk how u would manage it but for example if ur in a group and 3 went threw three first door and u drone over three wall to three thier location, u would not see them because they are inside a instance(different world like pvp maps)
EDIT- crates are showing up aswell as ammo, meds and other items that are able to be picked up!boss circles are not visible however.