Our group consisted of 60- something grandparents, two adult children, spouses and four kids, ages 1,2, 7 and 10.
This was an ideal set up for all. It was great being able to go to and from the beach quickly and easily throughout the day and evening. We could leave our chairs and tent there all day. In June, the beach was well populated , but plenty of space for all.The sunsets were beautiful. The pool was refreshing, the umbrella an added bonus.
There was a nice separation of the sleeping spaces in the two houses, good for family down time. Everything we needed was in the kitchen, although a few more bowls and plates would have come in handy.