I'm amazed they didn't ask the obvious question: If Minas Tirith is humans-only, what's the hobbit doing there? He's wearing their uniform, so he's not a tourist.
For the glory of Gondor, I sack this here concession stand!
"The rest of the poem plays upon that pun. On the contrary, says Catullus, although my verses are soft (molliculi ac parum pudici in line 8, reversing the play on words), they can arouse even limp old men. Should Furius and Aurelius have any remaining doubts about Catullus' virility, he offers to fuck them anally and orally to prove otherwise." - Catullus 16, Wikipedia
It has been confirmed he is not Imrahil. They merely needed someone from the movies to call Imrahil. If he is Imrahil, where are the Knights and where is his special armour? He is just a member of the tower guard.