I worry about sun damage. I rub plenty of physical sunblock on my older two, dress them in UV-protectorant rash guards, and put on hats (which they inevitably remove) but I also don’t like them to be in direct sunlight for the entire outing–especially my newborn who is not supposed to use any sunscreen.
A great solution is a UV-protectorant tent like the Sun Smarties Pop-up Cabana and Beach Tent…