Presents, they always work, before bed time, new fresh comfy pyjamas, they will go down a storm, etc etc etc
My wife is keen to start bushcraft camping, as soon as I can fit a jacuzzi in the tent
The wife is happy enough for me and the lad to go camping so long as I take her away on sunny holidays (Gran Canaria again this year) and luxury weekend breaks; in fact, I get the best of both worlds