My polling station was very busy. This was maybe a factor of going at a different time from my normal.
I even had a short wait for a booth after queuing for my paper
The staff were all taking good time to explain the ballot paper, you can vote for as many or as few as you want, #1 is your most wanted, and answering any questions.
They seemed not to be able to advise on the optimal voting strategy of vote til you boak.