Those who offered their thanks with "Haere pai atu" [have a great day] increased their chances of going back for seconds.
Throughout the week, students and staff were encouraged to give te reo Māori a go by learning a word of the day and using it in a sentence.
Each day a new word was posted on the UCOL Whanganui Facebook page.
The word being practised on Wednesday was "akomanga" meaning class, classroom or course.
At the open day, Student Life co-ordinator Elise Goodge demonstrated taonga puoro - traditional Māori musical instruments kōauau (flutes) and pūrerehua (spinning discs).
She spoke of their origins and traditional uses and encouraged everyone to follow her outside while she demonstrated the pūrerehua and listen to the sounds it made as she spun it around.
UCOL Whanganui offers beginner and intermediate te reo Māori courses.
The beginners' course offers relaxed conversational style learning in basic te reo.
The next course, beginning in December, includes greetings and farewells, numbers, basic mihimihi (informal introductions), pronunciation and marae protocols.