Your best bet, is just to get yourselves down there with your camping gear, then pitch up and sort yourselves out with a bit of a stretch. I'm sure somebody can point you in the direction of a local supermarket for your alco beverages!
We've never taken the beers with us when we've been to rallies or ARs etc. Better not to worry about the extra weight you'll be carrying.
Just a tip....thats all
Just to put it in perspective, Matts ridden down South with me on the back of Suzy before, with a full set of panniers, full tank bag, two sleeping bags, a ten kilo 4 man tent and stuff. It is possible, but if your not used to the weight it can be a little wobbly ...lol