Be sure your generator is a quiet one; some RV parks and state/national parks get very upset if you have a loud generator.
Don't try to drive from early morning until after dark; you'll have trouble finding an RV park. Try your best to get into the RV park before dark, so you can hook up, etc. in the light. You'll also have time for a decent meal and some relaxation before bedtime.
Develop a thorough checklist for prepping to leave, arrival setup, etc. and use it. Even then, you'll forget something: we all have, leading to funny stories and occasionally expensive lessons learned.
If your shower doesn't have one, install a cutoff valve. Teach the family how to do "navy" showers; wet down, turn off water, soap up, rinse, get out. If one absolutely has to have a long, long shower, use the campground showers. Your gray tank will thank you...
Above all else, maintain your sense of humor. It will sustain you when something doesn't go quite right.
Enjoy your new TT and the trips you're going to make with it.