Our first trip in the new car was just a problem at the start.
I just assumed everything would work but when hitching up I found the wing mirrors made the Milenco extending ones very difficult to fit but thought I had managed after some time.
I had previously had the twin plugs and used a convertor to connect which I left in place when not in use. I then found I could not get the 13 pin plug in. After about 15 minutes another caravanner helped out and luckily I had had the foresight to get one of the plugs for realigning but even with that we struggled. As a result we set off nearly an hour late.
Having got away the nearside mirror then came off in traffic, luckily I had a spare but this was also clip on, and ended up being tied on with my belt, which worked reasonably well.
Once pitched we found a dealer and got strap on ones, but have to say the quality is not as good as the Milenco ones, but I had a choice of one type. Will have a look round for some better ones though.
I suppose the moral is that when changing the car make sure everything is right for it and you know what you are doing.