Come July, Queenslanders won't be able to get a drink past 3am - unless they are in a casino.

In an emotional and sometimes fiery debate, which was expected to continue into the early hours of Thursday morning, with more than half the state government's 89 members accepting the opportunity to speak on the bill, the LNP accused Labor of "self-righteousness" and "cherry-picking" from research, while the government lambasted the opposition for failing to support the measures.

What whisky bars and restaurants do with liquors and liqueurs after midnight is still to be worked out in the regulations - the laws will ban rapid consumption shots after midnight, but may consider excluding shots of spirits that don't come with risqué names. Photo: File

Labor celebrated its last-minute deal which secured the Katter's Australian Party MPs support, thereby securing the legislation's success.

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Nightclub and pub owners, meanwhile, were left considering their next move, given they will have to stop selling alcohol from 2am, with an extra hour allowed for those in designated entertainment precincts.

Labor did have to concede to a delay in implementing the 1am planned lockout, two hours earlier than the present 3am lockout, until February next year.

But it considered it a small price to pay in terms of the potential political cost losing its hallmark legislation battle would have wrought.

Casinos remain exempt from the legislation, as it is in NSW, with the Palaszczuk government arguing drinking is not its main activity and for the large part, already exempt.

What whisky bars and restaurants do with liquors and liqueurs after midnight is still to be worked out in the regulations - the laws will ban rapid consumption shots after midnight, but may consider excluding shots of spirits that don't come with risqué names.

But the debate, and the legislation, belonged to Stafford MP Anthony Lynham, who joined the Labor Party on the back of its commitment to support lockout laws while in opposition.

Dr Lynham was visibly emotional while announcing the Katter party support for the bill, having pushed for its success, particularly over the past few weeks, while the government negotiated for the final number it needed.

Labor's one public voice of dissent on the legislation, Cairns MP Rob Pyne – who had previously questioned its impact on the economy in his electorate but on Monday said he had a moral obligation to vote for it to try to save lives – was paired with an ill LNP MP, and did not speak.