Impeccable, Fun RV Park Near Legoland and Beach
Okay okay, I probably shouldn't give this campground a full 5-stars. After all, it's expensive ($90 and up), and the sites are teeny tiny driveways with no room between them at all. But this place is FUN. Every little nook and cranny is well designed. You can walk to a beach. They have movies, a pool and hot tub and cozy little hang out spots. They really made the most of what is essentially a parking lot and I can see why someone would want to stay for a while or return year after year.
Pros: Just about everything said above plus a great lounge area (with PlayStation and shuffleboard), nice staff who will even help you park your RV, and generally a happy vibe all-around.
Cons: In addition to the steep price, the immediate neighborhood is not that great. There's a loud train that goes by (though I could not hear it in the RV) and the spots are the tightest ones of any campground we stayed at on our whole trip. The walk to the beach goes under a freeway and past some not-so-great spots.