I personally don't have an issue with players letting their hair down (within reason) at the end of the game. Or even between games, as was the case in Noosa. Australia away is a tough long series (even if it's shorter overall than it was 20/30 years ago due to the modern cricket calendar ). It's prob better from some to be out when the chance allows it. Rather than sitting in their hotel room, constantly replaying the events of the last match in their head and torturing themselves more than the Aussie bowlers already were. Get out and enjoy the country (it's a great country) and the company of your teammates for a bit.
Unfortunately there are a lot of puritans attached to the ECB. And people of bad faith taking snaps of the players during their downtime and selling it to the papers.
Aussie players have been known to have a beer (and the occasional skirmish) on England and other international tours too. They're a better side, yet don't seem to be held to the same standard.
Stokes - and maybe even Harry Brook and Ben Duckett - might be better off throwing their lot in with franchise cricket around the globe. More money and less scrutiny. What's not to like?
Leave the Test team with bland, anodyne players. Players who'll say all the right things in press conferences and will be tucked up in bed by 10.30pm each night. But still won't beat Australia or India.