I second that. We are seasonals with a brand new 36' camper and would never have it any other way, except with another new camper someday. Matter of fact, I pity the people who are at their wits end by the time they finally arrive and get set up. I'm already there, enjoying an early start to my weekend. I didn't pay the extra fuel or the jacked-up camping fee. I didn't have to make reservations or super pack. I didn't have to watch the clock to beat the sundown. I actually never have to leave. And our new baby has a total of 120 miles on it, the distance from the campground to storage twice a year, rinse, repeat. It's the reason we bought a previous camper. It had been parked at a site all year and hadn't suffered the wear and tear of being dragged down roads all it's life.
If you're considering a seasonal site, definitely test drive the campground for a weekend. Read the reviews. Some places are absolutely trashy and uncontrolled. Some are so uppity or have too many rules. Pick something in the middle, maybe a county or state run park. Do what makes you happy and what's sensible and affordable for your family. You're all young, and you'll have plenty of time to explore this country. Get to know the camping lifestyle first and don't let anyone burst your bubble.