Fair enough, also I've been focusing on the "please think of the children" aspect, but there is a weird aspect to start pushing for the "sex sells" angle to that demographic. And while yeah there are raunchier things easily available, named THE INTERNET, that's no reason to say "fuck it!" And let anything in a publication targeted to 12 years old.
What I'd truly want is to keep the fan service on characters 18+, to start.
And for underage drinking, there are a lot of examples of them about to make a toast and say "oh this is just fruit punch" or "I'll just pretend to drink" or most underage drunks are "oh they are just drunk in the head". Granted this is from scenes and series less than 15 years ago, before things were more lax, as I seem to remember kid goku or gohan having a trip, but more recent works always lampshade the booze.