Took the van down to a caravan park on the coast for a few nights last week, powered site, plugged the granny charger into the 15A outlet like I always do at home minus the extension lead. Woke up on the second morning to the manager knocking, not impressed, saying I should've told them I was charging a car and not just running the van's fridge and lights. I said sorry, happy to pay something, what do you reckon is fair, and he just said "a lot more than you think" and walked off without a number.
Battery was down to about 30% when I plugged in, was mostly topped up by morning. I don't actually know what that translates to in dollars on a normal household rate, let alone whatever the park is paying for their supply. Is there an actual going rate people offer up front for this, or do you just wait to get sprung and negotiate after the fact? Feels like I did something wrong just by existing but nobody tells you the number until you've annoyed someone.