Just had a week in the van at Chapel Las Vegas, Lincs.
We just fancied somewhere easy to get to and cheapo.
It was great for the first three nights as we had the site to ourselves, and then about five other tents/vans turned up. It was still ok until about 4.30am when two ambulances and a police car rolled up. Turned out that a guy in one of the tents had had a heart attack - and, sadly, didn't survive.
Nobody expects that on holiday.