@Haley170 One thing that you may wish to consider is that while your family may have handled the bedroom/bath/tables and chairs configurations well, your guests might not.
One of my properties was a large 3 bedroom plus 2 sleeping lofts, 2 1/2 bath house that I initially set up for 10 persons with a sofa bed in one loft and a trundle in another. It very quickly became apparent that more adult groups were booking than families with children, or that multi-families were booking without telling me about the number of children in residence. The reviews were not great; quite a few complaints about not enough en suite bathrooms and not enough seating for everyone to enjoy a family meal. This came as a bit of a shock as my large, extended family had enjoyed lengthy vacations in similar conditions (grandma's beach house) without any issues.
If the downstairs "kids" area is truly suitable only for children, drop your count to the number of adults who can sleep comfortably (2 to a bed) in the four bedrooms. Then, when you get the family group with a teenager and some younger kiddos, everyone will be happy with their space.
I would also recommend that you drop your parking count. 4 spaces is more than enough if you are expecting 4 couples with a few kids. Also, do your guests really order groceries to be delivered? Are you getting paid to be the "put away" service? I do like the way that you have worded your washer/dryer accessibility, encouraged use of the outdoor showers and that you offer a wagon with beach toys! I may have to come with my grandchildren!