[Gonefishing]

Everyone’s check list is different this is mine.
Hook up
Before pulling in get out and check area for trees, tables, where water, power and swear is at. Check area where slide will be.
Once pulled in block wheels, unhook from truck and, level camper.
Check inside for anything that may have moved while traveling
Make sure all faucets are off
Main breaker off
Now go outside
Hook up water plug in power
Back inside turn on main breaker
Put out slides
Enjoy

As for what is needed think of the camper as your home. What you use at home is what you need in the camper. I keep a list of food items as we use it I check it off so I know it needs to be replaced.
Leaving
I reverse the process. Empty and flush tanks
Turn off main breaker
Shut water off
Bring in slide
Store water hose and power cord.
Hook up truck remove tire chocks
Do one more walk around and you are ready to leave

Hopes this helps