I'd be interested to know where(ish) too.
We were at a tour in Devon on the BH weekend. Our squad is younger than this, so drinking was not an issue with our lot.
There were older squads there from other teams, and they all came with bottles of lager etc and I wasn't massively impressed, but not my kid...
As far as I know they didn't cause any issues, but still.. it's not necessary.
What I wasn't impressed with tho was the fact that on all 3 nights we had groups of kids running up and down until the small hours knocking on doors, shouting etc. I did wonder where the hell their parents were and was a bit pissed off that I'd taken responsibility for my DS as had the other 2 mums with their boys and others just let their kids run riot inconveniencing others.
I totally agree with the thing about the behaviour of some parents, some of them were waiting for the transfer bus at like 10am/11am with a bacon butty in one hand and a can in the other. Classy
It was a boozefest for some from start to finish.
Oh yes dear reader, I judged. A LOT.
OP, your comment: This was ok but on the last day, it escalated to him being thrown to the ground several times and then when he started crying the other boys nicked his shoes and tied them out of reach, only giving them back when I intervened
This is really bad and for this reason and the response from the Head, I would actively look to move clubs.
I had a situation a few years ago where during training one of the lads had sworn at my ds and made a nasty comment about his appearance. I raised it as I felt that the sessions are to BUILD and BOND a team - which is vital in Rugby. The club responded way more effectively than I could have ever imagined. Ours is a good club, it's so important.
If your DS goes on tour again, he might not need/want you there, but you won't trust the current coaching team to look out for him. I'd scale this complaint up and make your points very clear as to why you are not happy with what has happened.