Nonetheless, it had been a valuable experience playing NCAA Division III level golf in the United States.
"There were a lot more people than what we have over here, so the competition was much stronger," Wallis said.
"Just getting to play as part of a team was a different experience."
As part of his professional trainee requirements, Wallis must work for at least 32 hours a week at a golf club, and his role at Royal Wellington will see him working under the club's professionals, specifically Head Professional Scott Puddick.
"I work under all three of them, but Scott will be my mentor," Wallis said.
"This is my working at a golf club, it's a proper job there."
He will follow in the footsteps of ex-pat Whanganui professional Nick Gillespie, another to come out the Wanganui Golf Club.
While Wallis will dream of touring the world like fellow New Zealanders Danny Lee and Ryan Fox, ideally he just wants to make golf his fulltime profession, having his eye on also getting into coaching.
"I would like to give playing a go, but I would like to coach as well, and to coach after that [career]."