PoMo is right, pubs like to receive TWO invoices for beer, one from Lion Nathan, the other previously from CUB (now trading as Fosters Group)....
That's the way it's been for years, and in NSW (at least this was the case 3 years ago when I was running pubs) the only way you could get something as "exotic" as Coopers Pale Ale was through someone like HLW (Hotel liquor wholesalers) and most of their trucks are full of bottles of spirits/RTDs
Back then we had 5 lots of invoices
Lion Nathan
CUB
Coca-cola Ltd
HLW
Our wine supplier (forgotten the company name now)
Any beer that didn't come from LN or CUB came through HLW at a higher price than the potential cost if we purchased straight from the supplier, but with beers like these not selling quickly, we never met the minimum quota to get free delivery, so it was just easier to order it with the spirits.
Just a little insight from someone who has actually worked in the industry.
EDIT: Jase, just noticed your partner is working on her boss, the local licensee.....She doesn't work at the concord hotel does she?? That was the first pub I ever worked at in Sydney.