Silly but worthwhile to ask!
I will give you a couple:
1. Make a check list of things you need to do before you leave. Check tires, check oil, check batteries, Antennae down, doors securely latched, slide out in, closed and locked (if necessary) position. etc. You can make up your own list. I make sure I have my blood pressure medicine.
2. Don't haul things you aren't going to use. I use to haul a barbecue grill and tank. What a waste. Get a bag of charcoal, some lighter, and aluminum foil. Most campgrounds have grills.
3. Make sure you wear rubber gloves when you handle waste water.
4. Observe Rules of the Road. Don't be a road hog. If there is a line behind you when you are traveling on a two lane, find a safe place to pull off and let them by. People get anxious and accidents happen.
5. If you are towing a dinghy make sure you have auxiliary brakes. Most states have weight restrictions, and most dinghy's meet them, so you can get a hefty fine if you don't have a braking system in your towed vehicle. And if you have an accident, even if it isn't your fault, you can be ticketed for improper towing. Your insurance company would have a good time with that one.
6. Smile even when things go wrong. It will work out. You will meet a lot of really nice people on the road and you can easily avoid those who travel grumpy.
Good luck.