Don't forget to keep well hydrated between sessions. We all think about fluids when we're on the bike, but it's just as important off the bike. It doesn't have to be a huge amount. The age-old recommendation of 8 to 12 8oz. glasses per day works out to just 3-5 water bottles per day on top of whatever you have while on the bike.
Someone may raise the spectre of dilutional hyponatremia, but as long as you're drinking a steady, comfortable amount all day long, it shouldn't be a problem.