Florists and bakers should be able to choose whether they provide goods for same-sex weddings, Queensland Opposition Leader Tim Nicholls says.

Mr Nicholls was addressing the media in Cairns when the survey result was announced.

"All businesses will make their own decisions in relation to who they want to provide services for," he said.

"It should be over to them to make those calls."

Mr Nicholls was asked if the right to discriminate should be enshrined in legislation.

"The people who want to buy those cakes and want to buy those flowers will make a decision about where they can best go to get the services they want, the cakes and the flowers they need and that's as it should be."

Mr Nicholls, who voted Yes, did not say whether he was pleased with the result of the survey, but said it had given people a chance to register their opinion.

"Now it's up to the people in Canberra to make the decisions that they need to make and to follow through the policies that were put in place there and what the Government said they would do," he said.

Asked if he believed his colleagues should now legislate same-sex marriage, Mr Nicholls said that was their policy.

"I understand that's the Prime Minister's policy to introduce the legislation," he said. "Up to them."

'I'll bake a cake', Palaszczuk says

Queensland Premier Annastacia Palaszczuk dismissed Mr Nicholls' position.

Sorry, this video has expired Annastacia Palaszczuk responds to Tim Nicholls' comments that bakers can choose to serve gay weddings

"I firmly believe that people across this state will embrace the nation's decision," she said.

"I think people are going to be lining up to make cakes.

"I tell you what I'm not the best cook there is but I'm happy to bake a cake."

Ms Palaszczuk said Federal Parliament should now act.

"I am incredibly proud that we live in a progressive, dynamic nation," she said.

"Many families out there can now make that commitment in front of their families and friends.

"The will of the people is there, the public has spoken, and I think it is absolutely the right time for our national leaders to introduce that bill."

Queensland backs same-sex marriage

There was an outpouring of emotion in the Brisbane CBD, where thousands of same-sex marriage advocates gathered for the survey result announcement.

Scott D'Amico (left) and Brad Harker (right) celebrate in the Brisbane CBD. ( ABC News: Claire Boughey )

The John Paul Young hit Love is in the Air was played over loudspeakers as the members of the crowd hugged, cheered and cried with joy.

Among the crowd were Brad Harker and his partner Scott D'Amico, both draped in rainbow flags.

"For years we've felt that we've had to hide our sexuality and now we feel Australia is backing us," Mr Harker said.

"We're getting married — we've got the rings.

Brisbane the state's biggest supporter of SSM

Nearly 1.5 million Queenslanders had their say in the same sex marriage survey, with the state's Yes vote coming in at 61 per cent.

That was 3 per cent higher than NSW, and just below the national average of 61.6 per cent.

Support for change was seen across Queensland, with 27 of the 30 federal electorates recording a majority of Yes responses.

Thousands gathered at at Queen's Park in Brisbane on Wednesday morning. ( ABC News: Patrick Williams )

The regional seats of Maranoa, Groom and Kennedy were in favour of the No campaign.

Across Queensland, the response rate for all age brackets was 69 per cent and above, with 88 per cent of voters aged over 65 returning their surveys.

The seat with the biggest percentage of Yes supporters was Brisbane, with 80 per cent.

That was followed by the inner-city electorates of Griffith (77 per cent) and Ryan (73 per cent).

Australia 'deceived' by Yes campaign, Bob Katter says

Bob Katter, the federal MP for Kennedy in the state's north, said he would be voting against legalising same-sex marriage when it came up in Parliament.

"There was an obsession by the media and by a cabal of CEOs … they have put a fortune behind this campaign."

"I think the people of Australia have been massively deceived. If you were told that this is going to change the world as we know it, as I heard today on the radio, then you were lied to.

"There is no change that occurs at all, except religious freedom is now under threat."

On the Gold Coast, a region that supported same-sex marriage, residents that spoke to the ABC said they were pleased with the result but had concerns about what would happen next.

"I think it's going to be a real bag of worms," resident Paul McGuire said.

"The biggest question question of the lot is, now that it been held, what are the politicians going to do with it?" Steve Augustus said.

In the Burdekin, a rural north Queensland community, some were less pleased about the Yes vote winning.

Resident Eddie Ray objected to the word marriage being used to represent a same-sex union, which he said should only be for a man and a woman.

"The others can take a word, any word and I'm OK with it," he said.