Hi Ron - I think the nearest pub is the Richmond Arms which is staggering distance from the sites? There is a shop on the site but it's no offie so best take it with you!
Tesco deliver, but we usually take a load of booze with us or shop in Sainsburys in Chichester.
Best Get Kel's Pimms in she's going all posh for the weekend. The TVR boots going to be getting some use better than the Lotus I had we would have been on mini bottles!