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

Can you attack NPCs/Shopkeepers?
At this time you can not attack Shopkeepers or town NPCs, however this will be looked at and perhaps changed in the future.

Will an NPC remember if you talked to it before?
For quest purposes, yes, the NPC will remember that you've talked and will know where you stand as it relates to the task you were given.

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

Will shopkeepers have a limited supply of items?
Yes and no. Common items will always be in supply, however some shopkeepers will sell uncommon items which might or might not be in stock when you are visiting the store.