まいりますis a very polite form (敬語/けいご) of 来ます。
緊張しています/きんちょうしています=I am nervous.
質問/しつもん:
What is Emily's purpose of being there at this event and posting this video in You Tube???
チャレンジ:
What is MOEGOE? Can you use MOEGOE??
What does the girl in yellow suit look like, according to Emily??