The bloke likes a party (and, it seems, a drink). He's not the first, he's not the last, plenty of players have had similar social lives and still delivered on the pitch, and if he's going to do it then during a couple of weeks gap between fixtures is probably the best time.
I don't particularly like it, though - the club cancelled the planned Abu Dhabi trip for around this time because of Covid restrictions, so for him to be in Dubai doesn't seem the smartest idea. Not to mention that it can't be ideal for his fitness and of course it raises the risk of him doing stupid drunk shit that gets him and us bad press (like his falling asleep in the street escapades, or his driving offences).
I get that players need a social life and they need to unwind. He seems to make friendships everywhere and if he's that kind of sociable extravert person then if he can't do that stuff he'll be miserable and that'll affect his performances too. Think he and the club just need to agree some limits - and unless we get any official comments, we don't know for certain that this hasn't been agreed.