The World Cup favourites spent two days in Dublin this week before moving on to Limerick on Thursday to prepare for Saturday's final Group A match against Ireland at Thomond Park.
"It has been fantastic so far, I have really enjoyed it," said Myles. "We have done a lot of sightseeing and I am definitely seeing a lot of the side of the world that I haven't seen before.
"We've done the Cardiff Castle and the Guinness Factory the other day was pretty impressive. When you come over here and you see castles that are older than Australia, it is pretty cool.
"I am really enjoying it but it is now half way through the tournament and we are starting to get down to the business end now so it is time to switch on. One more game until the quarters now, so it's game time - it's on."
Myles, who plays his rugby on the Gold Coast of Queensland, is bracing himself for a chilly night in southern Ireland, where temperatures are expected to drop to two degrees centigrade.
"It was that cold at St Helens last week that my lungs were numb," he said. "It is kind of scary when you think about it, playing in two degrees. I just hope my fingers still have some feeling in them when I knock the ball on them."
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