What would be your top Dos and Don'ts of caravanin

HI

After a couple of years of going with the inlaws in there van we have finally decided to buy our van. (after much searching we have bought one today :) )

Just wandered what top tips below had for a novice caravaner". Unfortunatley my father in law passed away recently so we will not get the bennefit from his experience.

Any good dos and don'ts would be greatly appreciated.

Thanks

Lizzy