world of warcraft NPCs

Can I see famous NPCs such as Thrall?
There are various famous characters in the world for you to discover! Make sure you capture a screenshot with them!

Can you attack NPCs/shopkeepers?
You cannot attack NPCs and shopkeepers in your own faction. However, you can attack NPCs and shopkeepers from the opposing side. Keep in mind that NPCs typically reside in enemy towns. In PvP realms, enemy players will be able to attack you if you enter their towns. On normal realms, attacking an NPC or shopkeeper will flag you for PvP and enable enemy players to attack you.

Do NPCs remember if you talked to them before?
For quest purposes, yes, NPCs do remember if you've talked. This helps them keep track of your progress for quests they have given you.

Do NPC merchants close up shop at night?
No, however there will be wandering merchants that might not always be where you last saw them.

Do shopkeepers have a limited supply of items?
Yes and no. Common items are always in supply. However, some shopkeepers sell uncommon items that may or may not be in stock when you visit their stores.

Are items crafted in World of Warcraft more useful to other players than crafted items typically are in other RPGs?
Throughout a player's career as a crafter, there are certain items that he or she can create which will be the best items at that level. For example, at level 40, the best bracers might come from a player with the blacksmith trade skill, while at level 45, the best bracers might be from a quest. There are also a number of consumable items that can be created by players with trade skills, such as armor patches and sharpening stones. These consumable items can be sold to other players, who can use them to improve their existing armor and items.

Can players use crafting professions to recreate the same item over and over as long as they get the right materials?
Yes.

How does the trading interface work?
You must be side-by-side with another player to trade. The interface is designed to be as secure as possible. A similar interface is used to provide a secure system for enchanting and unlocking boxes and so on. This prevents you from having to actually hand over your items to the enchanter, whom you might not fully trust. In World of Warcraft, the enchanter doesn't have to have physical possession of your item to enchant it.

Will players have the ability to change factions (for example: from Horde to Alliance)?
No.

Can the same account have both a Horde and Alliance character on the same Realm?
On normal servers this is possible, but on player-vs.-player servers (PvP) it is not.

Can players trade with members of the opposite faction?
No. In general, you cannot trade with players of the opposing faction. However, you can place items up for auction at the neutral auction houses at Everlook, Gadgetzan, and Booty Bay. Players from either faction can bid on these items, meaning you can buy from opposing players at this neutral auction house.

Will Horde and Alliance characters have the ability to gain faction points, thus allowing them to utilize each other's cities?
You cannot switch sides. Thus, you cannot make use of the opposing faction's cities.