They need supervision thats for certain! they have strange idea's as you are finding out, I realised years back that if you look where "they" (family & builders) live, that is their standard and what they consider acceptable, my wife accepted (had to!) that my ideas were far superior to hers
A word of caution on the kitchen, use teak if possible! I "lost" a kitchen some years back when the local termite population decided to eat it!