Hydration is definitely important, both for pre-gaming as well as during the show! The venue has just put up their day of show info (
https://www.livenation.com/venues/14407/jiffy-lube-live), and that includes the information that each person CAN bring up to 1 gallon of water in a factory-sealed bottle into the venue.
I'll be volunteering with Reverb on Saturday evening at JLL, from the time gates open at 6:30pm up til 8pm. We'll be selling the Reverb/Nalgene/DMB water bottles at the Eco Village tent ($20 each), with free water refills all night from the 'Rock n Refill' filling station. You can also use the filling station to fill-up bottles you've brought from outside...please take advantage of it. All of the DMB water bottle sale proceeds to go Bama Works, and their work this year is retrofitting affordable housing units in Charlottesville with solar paneling.
We'll also have rovers going around the venue with the water bottles (look for folks with the green shirts)...the rovers can take cash but the folks at the Eco Village tent can take cash and cards. Also, there are other cool things to check out at the tent, including a entering to win a Dave-signed Martin guitar.
Stay hydrated, stay happy!