Orange County is definitely one of the easiest airports to fly in and out of. The other one I really like is Lansing, Michigan, which is possibly even smaller than Orange County. I don't think I've ever had more than 2-3 people in front of me in the security line in Lansing.
Back in the mid-1970s, I went to school in East Lansing. My next-sister-down came to visit. She came in DTW but was going out from Lansing. She was worried about finding her gate. I explained that, in those days, there were two gates separated by a folding table. She stopped worrying.
lol. Both my parents and brother went to U of M, and I went to the law school. But he wound up teaching at MSU, which people In The Know find mind-blowing
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For arrivals and departures I'll take a small/medium airport over a big hub any day, but big airports are nicer for a long layover.