Can a Tyria character do Minister Cho's Estate and Zen Dajun?

I've walked around and don't see a way to get my Tyrian character into those mission areas. Have anyone done those successfully with a Tyrian? How did you manage to get access if you did?

Yes you can, they made a change so that tyrians can get the protector title. Don't remember how I got in there apart from maybe doing the quests that lead up to it.

You just basically walk inside, no need to get the quests as you can't get them I'm not sure if having Canthan chars in your party will make the gates close for you though...

yes, you need to walk to the missions on your own, if you have canthan characters the gates will be closed, but im not sure if this applies to canthan characters that have already done the respective quests to get in or to only the canthans that havent done those quests.