Explanation:
Change into passive....
They are inviting us on our holiday ...
The structure used in this sentence...
- Sub + is / am / are + being v3 + Obj....
Ans : We are being invited by them on our holiday...

First person point of view, and an unreliable narrator. Having it like that means he can go into the depth of the phycology of the character
I believe it's the third answer, Hopeful Reverence
Repeating a sequence of words at the beginning of a phrase is called 'Anaphora' in rhetoric. It is used in speeches to give emphasis to the point being discussed. Thus, the speaker wanted to emphasize his point and encourage his listeners to do something as well.