"Can I say to people who are attending, you have to check into the stadium, you have to wear your mask in there and you can only remove your mask when you are seated if you are eating or drinking," Ms Palaszczuk said.
"That doesn't mean sitting there with a beer and having the mask off — it's only when you are drinking.
"We have to do this to keep everyone safe so I am making it very clear that these are the conditions that have been put on by Dr Young and that is what I expect everyone to do."
But many fans in the crowd at Suncorp Stadium seemed to ignore Ms Palaszczuk's instructions.
Large sections of supporters were spotted not wearing masks at all, even when not eating or drinking, while many were only wearing theirs around their chin.
Viewers were concerned at what seemed to be a lack of adherence to mask wearing, as well as the sight of most of the 39,000 fans packed tightly into the bottom decks of the grandstands.
Pundits questioned the NRL's decision not to use the upper sections of the stadium to spread out the spectators and exercise social distancing.
"LOL is the crowd meant to be wearing masks?" radio newsreader Natasha Lee tweeted.
"Lucky the Qld government pulled the capacity back to 75 per cent much safer," reporter Steve Hart joked.
Journalist Eliza Berlage tweeted: "Seen about three people in the crowd wearing a mask correctly let alone at all."
Broadcaster Sarah McDonald added: "My god, anyone else freaking out looking at crowds making noise!?"
Channel 9 Sports reporter Mark Gottlieb wasn't impressed with the lack of social distancing in the crowd.
"This is disgraceful," he tweeted. "For all their talk of last 25 per cent of each bay losing out it looks like they've just punted the cheapest tickets."
