*Spoilers* During the battle with Rita near the end of the film the zords are on fire/surrounded by fire and because of this there is a brief scene where Kimberly does say "I can't breathe, I can't breathe"
kind of, they're pulled under water for a short period which could be triggering, there's sputtering as well because of the water inhalation. nobody is specifically held under the water.
I don't believe it would be considered alcohol ABUSE, but Trini(who is underage) is seen drinking what seems to be a beer during the scene where the rangers are talking around a campfire