..Even when we're passing through and staying just 1 night, we still hook up electricity and water, at a minimum. Any more than 1 night, and sewer gets hooked up, too (assuming our site has such).
My gang likes their 'creature comforts' waaaay too much, to do it any other way. Especially here in the South, where most times, places we camp, air conditioning is a must or you'd burn up. Also, like already said, If I'm going to pay for the convenience of those hookups, I'm going to use them. Otherwise you might as well dry camp somewhere and save yourself a good bit of $$. :)
Only time I can recall that we ever did not hook anything up was when we were 'dry camping' for a night in relative's driveway, and hookups were not an option. In that case, I had to run the generator all night to power the air conditioner. Done that a couple times and it works great, but I'd really prefer not to do that if I can avoid it.
