Similar HUD, but most players I talk to that came from WoW will say thats where the similarity ends. I never played wow past the noob zone and it does share similarities such as quest icons, menu set up, and probably other things that I just dont remember.
Most 'dungeons' are instanced zones. You can exit and enter at your whim. There are areas that are locked until you're on a quest..and some only during the quest and never again. (You can repeat these quests though, via a reflecting pool).
I have no idea what the raids in WoW are like. Currently there are 2 raid zones. One being a 12 man instance (2 groups of 6), the other being a full 24 person instance. Once inside the progress itself is locked. If you defeat Mr BadGuy, it acts as a flag and while I'm not sure on the reset time, it does stay flagged that way until it resets. (Note: that doesnt mean they wont respawn, which can be an issue).
Check the OForums
HERE for a list of servers. I dont think any of them mention they are specific to a coast, though unofficialy they might be.
The Allakhazam kinship "There is no fifth star" is located on Meneldor, we accept members of all classes/levels and have a wide variety of players that constantly shift depending on what hours you play.
Any wrong information I gave you was completely on purpose and I will blame it on my meds.