After reclaiming the Ashes urn, the Australian team embarked on a jubilant celebration starting at the WACA ground and continuing at the Crown Casino complex, courtesy of legendary leg spinner Shane Warne.
But not all was well, with fast bowler Ryan Harris voicing his displeasure at some of the staff at the Crown Casino via Twitter at around 3.30am WST.
"A tip for all those heading to Perth! Avoid the crown or casino! S*** hole can't get in if you have had a drink #s***place#d***heads," Harris' tweet read before it was deleted.
WA all-rounder Nathan Coulter-Nile, who was on stand-by for the Test and also took part in the celebrations, also tweeted: "Crown casino wouldn't let the team that won the Ashes onto the premises because security were on a power trip. Worst place!."
Crown Casino declined to comment when contacted by AAP.
But Watson, whose blistering century in Perth was part of the famous win, attempted to dilute any lingering animosity by a gentle teasing of the vanquished English foes.
"Shane Warne was very kind to put on a party for us at the Crown Casino. It was a brilliant night to get everyone together," Watson said.
Watson said he had retired to bed before Harris' run-in with the security, but when asked whether they may have stood a bit firmer than the English replied: "Well I wasn't there for it, but maybe they did."
"Obviously things for a period of time might not have gone exactly right. But in the end we were just there to have a great time.
"There was no intention other than making the most of winning the Ashes back."
A croaky-voiced and sheepish Harris apologised on Wednesday afternoon when he arrived in Melbourne.
"Obviously I made a silly mistake this morning and I tweeted something I probably shouldn't have," he said.
"It was a silly thing to do - they let me in in the end, so they did the right thing.
"But they have to do their job and they were doing it.
"As I've heard many times before, don't tweet when you've had a drink."