6 of one, half a dozen of the other ;-)
Hmmm, I think that this is more of a feel-good photo than a technically good photo. Things I like about it: the pleasant soft colors, and the playfulness of the children. It must bring back good memories for you, and heck, I wasn't even there but it makes me think of fun times I've had at the beach. Things I think could be better: the horizon is tilted a bit, and both girls are 'leaving' the photo. I mean they are either looking/facing out of the shot or walking away from the camera.
Spike
What I like, what I don't
Like it because the kids are leaving the photo. I think someone said otherwise. I think this is a place where the break of the traditional rules work. Like the balance of both girls on either side of the frame.
Don't like the head being cut off by the horizon line. Don't like the horizon being tilted.
All in all, good wholesome family fun.
Dennis