As an an adult, I've only been to a European CP - but it was so sould destroyingly dire that I've sworn off the whole franchise.
It was just so joyless. Like a microwave meal holiday. All the elements are there, but the whole thing tastes like scrapings and cardboard.
For calibration, we liked: Landal holiday parks, Eurodisney, camping, Bosinver holiday cottages (super lovely) and general bowl up the motorway-stop-in-the-first-travelodge type breaks.
What was wrong with it:
--Too many people, and badly planned set up, making it feel competitive and crowded. Queue for the park, queue for your cottage queue for your groceries, queue for your dinner in the 'dinner enclosure pavillion thingie' quefor your morning croissants, queue for your activity booking and queue for the fricking pool to open at 10 before watching your 3 year old get trampled by the hairy teenage boys who just about wake up at ten and need to swill around in the same water as boobies (did I mention the heavy petting in the jungle river?).
-- Food was very poor. No oven, which cuts out a whole swathe pf shorcut meals (pizzas/nuggets/ jacket pots).
-- It varied from person to person - but in general too much bad service and plain old rudeness for a 'welcomed' feeling.
-- PLASTIC covered mattress. apprently for hygiene reasons. I've never stayed in a hotel (i.e. new guest every night) that found this necessary - so I can only shudder at what the average CP punter must get up to in the privacy of their executive lodge....
-- ... which isn;t actually very private, since beyond the patio there is no barrier, so we were forever fetching our kids back from 'exploring' both to prevent them going too far away, and to prevent them bothering the people next door.
--- Next door means "a breeze block away" secluded it ain't - unless you have very poor peripheral vision.
-- Random rules and arrangements. Like a coffee shop that only opens at 10. So you're a bit stuffed if you wanted to head out for holiday brekkie treat with early rising kids to give OH a lie in. How many cappuccinos would they have to sell to their captive audience to justify hiring a kid to stand behind the till? Is it maybe that they don;t give a shit once you've paid. Maybe.