Okay then.
I just see it written all over the ropes. Haha
I know Australians like to drink, I’m wondering if they they’re just reminding them where they are in case they get too much beer in their guts.
That's part of it. It is in fact a local custom to get so blackout drunk that you can't remember what you said 5 minutes ago, thus endlessly repeating yourself.
To not repeat yourself could be taken as an insinuation that your think your audience isn't very drunk, which is considered very culturally insensitive, but also elicit suspicions that you are a teetotaller, which is still illegal in most states.