Hello, and welcome to the CT world
as a female porta potti
will save your marriage (especially on a cold wet night when your wife has had a few to drink
)
your better half and child, without them the experience is not the same
12 volt fridge
12 volt camp shower (those solar ones are useless in my opinion but thats only my opinion)
If you have room a hot water system (we have a coleman) is great to be able to give the kids a decent bath, and its nice to have a warm shower without having to boil the kettle a couple of times.
Most of all, make sure you have fun and enjoy this beautiful country of ours