Most riders would usually take a short break whenever they pit in for refuel. Either a quick drink, a light snack, a fast piss, etc.
Unless they are on one of those touring bikes with really large fuel tanks, then maybe they'll bring along some water bottle or etc.
The general idea is to keep our stuff light, so carrying around food/drink is kinda not that crucial if we know there are plenty of stations stops in our journey. The space/weight would be better replaced with things like tire puncture kit, mini can of chain lube, or a small tool-kit, etc.