Lest I be duped, I dont think that I'm the one that's going to be disappointed, I hope. Player-driven, town & housing construction, environment deformation and building, deep player-driven crafting and everything, including open world interaction. I thoroughly enjoy the concept of this game.
11.) Will there be PvP?
Yes, the game is open PVP with consequences and a sparring / training combat mode. In the early Prelude towns will be safe zones.
16.) Can I build anywhere or are is it restricted to certain locations?
You can build anywhere, but only tribal areas are currently safe zones.
Prelude has more safety nets, and certainly tribal areas, which is to be expected. I should expect to have to be cautious when I venture further for more valuable resources, or at least I hope I'm not coddled with extraordinary oversight from harm at the hands of another player.
And with the consequence system in-place as the prelude progresses, here's to hoping that the consequences aren't so harsh as to really alienate and drive away players that are pvpve enthusiasts that dont define pvp with switches, arenas, sparring, duals or some invitation system.