The only surprise that I can report was a rather unpleasant one.
When we first bought our current caravan it was brand new and obviously we took (and still take) great care of it.
It was stored in a compound two minutes walk from our house where we thought that it would be safe because the storage site owner lives on site. Not long after we started to use the place I noticed a slight dent in the side of our caravan near to the back.
Friends who live nearby told me that the storage site owner had held a firework party for his young sons that weekend and it looks very much as though an airborne firework had caused the dent.
Needless to say, when I tackled the site owner about the damage he denied all knowledge and accepted no responsibility.
My revenge came a week later when we moved the caravan to it's current storage site where it is looked after, and our best friend and his parents both followed suit, so the original storage site owner lost three monthly rents and has lost a few more since then.
Our caravan isn't as close to home now but it's inside a nice dry and secure barn in the Worcestershire countryside five minutes from a junction of the M5, so we now collect the caravan on the way down the motorway that we use most regularly.
We found the new storage site via a friend of a friend and the farmer was happy to accommodate not only our caravan but the two others who followed us, so one might say that it's surprising what you can find if you ask around