Hello!
I am bidding on this because I love Greece, and was attracted particularly by the fact that your tours bring the magnificent and exciting past of the cradle of European civilisation to the forefront.
I am not a native English speaker, but I do hold an Oxford degree (in litterature and English), so I can guarantee you that my mastery of the language is no reason for concern.
I also have a very profound knowledge of Greece, and particularly of its ancient history, since I have had twelve years of classics' education, of which eight included ancient Greek -- language, mythology, history and culture.
Hoping to hear from you.