"I've never been the one to always want to do this stuff," says Rojas, who is always friendly but media shy. "Hopefully my Spanish is good enough that it can pass."
It needed to be. Rojas was grilled on a whole range of subjects from his Chilean-Kiwi upbringing to his knowledge of Mexican culture and food.
"I'm sure my family will be proud," added Rojas on the multi lingual demands. "It's not easy for me because I haven't learnt it properly."
Demands will only increase in Mexico, both from media and his anglophone colleagues.
"I might just hide in my room and lock the door," jokes Rojas. "Maybe I should have bought a couple of phrasebooks and handed them out."
"We already call him 'El Marcito' (little Marco)," said another reporter, "El tiene magia (he's got magic)."
Like the rest of his side, Rojas looks forward to the Azteca with an equal mix of fear and fascination.
"It will be special," says Rojas. "Everyone who knows football knows the Azteca. But there is still belief, everyone writes us off and we are always playing against teams that are expected to win. Look at what [the All Whites] did at the World Cup - we are going in with that mentality."
The scale of media interest in this fixture grows by the day. There were a dozen camera crews present yesterday, from the big Hispanic and Mexican networks (as well as ESPN), channels that measure their viewership in tens of millions.
It's pure football fever. Suddenly there is high interest in Phoenix striker Jeremy Brockie while Tommy Smith spent nearly an hour fulfilling media obligations.
In Mexico City the reporters will number in the hundreds and there are already some concerns about how long the All Whites will take to get out of the airport, when they arrive just after 11pm Monday night (6pm Tuesday NZT). Especially 'El Marcito'.
Marco's guide to football Spanish
Vamos Nueva Zealanda - Let's go New Zealand
Tenemos que ganar - We have to win
El árbitro necesita lentes! - The referee needs glasses!
Golazo! - What a goal!
No fue penal - That wasn't a penalty
No es justo - That's not fair
Tenemos que esperar hasta Wellington - We have to wait until Wellington