Bring a Camelbak, hands down the best way to stay hydrated. All the lines end up blurring together at some point anyway, so it doesnt really matter. If you buy a larger one, they will have spots for you to store all your gear; flags, wipes for the bathroom, Kandie, etc.

Here is how my crew does it. There are two of us with Camelbaks. The others tend to have water bottles that we fill up as needed from our packs. When they do not want to carry them, we store them in our packs on the sides in the holders. Personally I have used El Wire to make it a fun prop.

Here is the one I use: (worth the cost; have had for years)

https://www.amazon.com/Osprey-Packs-Syncro-Hydration-Pack/dp/B019UTKT6Q