SNA (John Wayne) is small, 14 gates. Good thing about it, getting through security is quick. Bad thing, it's tiny (limiting your flight options) and no flights depart after 10:00 or so in the evening and land before about 7:00 in the morning (noise ordinances). Plenty of reasonable places to park within a sub-10 minute walk, if you even wanted to do that. I literally work across the street and do it all the time.

Cheers,

Adrian