That is something that gets me. The price of wine in pubs, you very rarely find a bottle for less than £20 when you know very well you could get the same bottle from Lidl for less than a fiver, it's got to the point now that I drink bitter or lager even though I would much rather have a glass of wine.When I have done pub stopovers we end up spending far more than we would in a hald decent campsite. Often typical pub grub is pretty poor and I could have knocked up something better on my hob in the motorhome. And certiany you'd get a better bottle of wine from the super market for less than half the price of a pub. So actually pub stops work out at poor value considering a campsite will give you a 24 hour toilets and showers - possibly electric too.
I will still use a pub if there isn't a decent alternative where i am.