The guys on sxs's always have a 30 pack or two on board.
I refrain from drinking at work but they insisted I have one.
I've thrown an extra mule on the packtrain specifically for packing two coolers full, but only when backcountry fishing in the summer.
I even made an insulated top load cooler that secures to D rings on a Decker just for keeping trail beers cold during the ride in, so that I didn't have to deal with weight issues on one side or the other as I whittled them down.
