"They were pretty happy, probably a bit battered and bruised, but they played to get away with the result – a deserved win.
"They've just got to get through one more week and they can put their feet up."
While starting as favourites, there are several veterans remaining who will remember the Meads Cup final at Cooks Gardens in 2016, when the squad just survived 20-18 against an underdog Buller team they had beaten by 28 points three weeks before.
Of more recent memory is this eerie similarity to 2019, where Whanganui won a bruising away semifinal against Thames Valley 20-15, but had little left in the tank when they played North Otago in the Meads Cup final, beaten 33-19.
"North Otago was up for a home final, so they were pretty pumped as well," said Caskey.
"But that's part of the challenge – making sure you back up from a good performance.
"We've been in a pretty good groove for the last 3-4 weeks."
It's a long journey from the deep south to Whanganui, but North Otago will bring a solid lineup with them, including captain-hooker Sam Sturgess and winger Hayden Todd, who were named in the NZ Heartland XV this week.
Selected for the first time in the national team, standout Whanganui prop Hadlee Hay-Horton did not train on Tuesday as he tries to get his injured knee ready in time for Sunday.
"He thinks he should be right to train on Thursday night," said Caskey.
"He's had a good season, so well deserved for that Heartland team."
With an extra day's recovery, Hay-Horton's decision whether to play could be left until the start of the weekend, but Whanganui is relieved they will have the services of Viki Tofa, who due to his religious convictions does not usually play sport on Sundays.
"He talked to his family and father, come to the decision to play, if he can do church in the morning," said Caskey.
Given the close nature of championship games, Caskey reminded the team this week that the scoreline last time was a little flattering to the home side, who scored three converted tries in the last eight minutes – one from an intercept and another from a breakaway on a reverse side restart kick.
Before that, North Otago had got back into the game, trailing 21-12, and spent long periods on attack.
"I said to them before the game, 'it might take you 70 minutes to get on top of them,' and that's what it was," said Caskey.
Kickoff will be 1.05pm at Cooks Gardens on Sunday.