You shall not pass... up this opportunity to see some great Kiwi comedy! The last Lord of the Rings movie came out in 2003 and these NZ comics are still riding that wave. They don't have a single joke about hobbits or any opinions on the works of Peter Jackson, they're just using this as a marketing ploy. Although, they're travelling all the way to Edinburgh so, in a way, their journey is like Frodo and Sam taking the ring to Mordor - we assume, we haven't actually seen the movies.
