Jackson nodded, trading his bottle for Rene's flask and taking a bit. It was good, but then, he wasn't very picky as long as whatever he was drinking would get him drunk and keep him that way. He did offer a small smirk in regard to the lake monsters. "I'm pretty sure they'd be in bigger lakes. This one isn't all too big. Might hold a baby monster but nothing grown."
He dutifully ducked under the water to rinse when he was to to do so, emerging to listen to what Rene was saying. "I could get some. Apparate somewhere and grab you some supplies." Less than legally most likely but he could do it and he wouldn't complain. The other boy was his friend, after all.