As I understand, only the RvR battles and some scenarios are instanced. Everything else is just plain ordinary battles and quests. Warhammer Online is very addictive game, and already has millions of active players. I am one of them, and I am enjoying every minute spend playing it. RvR deciding battles takes places on objective-based battlefields and in instanced scenarios. This way, NPC merchants are one of the key figures in every battle. I recommend you to play the game. You will not be disappointed. Instanced can be fun and sometimes you will never see that a quest is instanced. It is great way to cover that in the game, because you will then enjoy playing the game.