Q: What's your actual height and did you lie about it to get the part?
I am 6ft 3in - I just spent the first few months on my knees hoping no one would notice.
Q: Was that a real beard? If so how long did it take to grow?
Can't tell you, I'm afraid ...
Q: Given the similarity of names, did you have any initial problems remembering who was who in the company of dwarves?
I made up my own names for them, most of which are unprintable.