Myrtle Beach Suggestions

Now we are on to planning the next vacation for the summer and are considering Myrtle. I personally have never been there. Last year we did Cherrystone in southern VA based on recommendations and it was a great time so looking to the forum again. This trip is a bit different than most others we take. It includes my parents and my sister and her 4 person family. None of them have an RV or do much camping, so for this trip every year we look for a place that has nice cabins. There will be 5 kids with this crew ranging from 4 to 13 in age. So.. While my immediate family are more "mountain" camping types, we do enjoy the beach and it tends to go over better with the whole crew.

Myrtle beach looks like a fun location. Through a quick google search the KOA looks nice (wooded but close to the beach) and I see a place called Pirateland which appears to be huge and right on the beach. Any thoughts? Thanks!