I remember drinkning a lot of Kool-Aid, and sometimes sodas, and Icees (aka Slurpies). THere was soda factory in my home town. You'd get a giant wooden crate to fill with any flavors you wanted, ginger, blackberry, cola, rootbear, cream soda, orange, etc. But that was a special treat. I must've drunk water, but certainl don't remember it.
My DB & SIL give my 10 yr old nephew Gatorade & the like when he plays his basketball/soccer/baseball games, but I do see him drinking a lot of water. SO I'm hopeful.
Stay calm and carry on.