Mac nodded, reaching into the bag and pulling out the bottle of Gatorade. The tea would have to wait, but at least it would stay warm. He cracked open the lid and handed it to Dylan with a, "Drink slow so it doesn't all just run right through you." Mac rearranged himself a little so he was sitting behind the younger man, propping him up so he wouldn't have to hold himself in that almost-seated position. He could just lean, and relax. "I'll try to make sure you don't pass out or anything like that. I brought my guitar, could maybe play for a bit when you're head doesn't hurt so bad - so you have that to look forward to, at least."
To be honest, Mac was at a complete loss. He didn't know what to do here and he was sort of just... rolling with it. The important thing was that someone was there with him and Mac would stay all night and all the next day and hell, all that night too if he had to.