Since you haven't had any response, I will try to help. If the sod is 4 weeks old, is it possible that watering twice a day is too much? Is that area saturated? I see lawn chairs, have you been sitting in that area? Could it be damage due to traffic? What was the quality of the soil in that area? Any different from the rest of the lawn? I dont think it's possible to harm the lawn by mowing too often. In fact the grass looks a little long.

They bloom in fall and winter -- that is the great thing about them! And you have picked two nice varieties. Here is a link to some planting tips. (See below.) The main thing I have found is to plant them high in a wide but shallow hole, so they will not later sink below grade. And use plenty of good planting mix (it is worth it). Give them plenty of water during dry spells for the first couple of years until they get established. Here is a link that might be useful: Camellia Planting Tips

Remove that carpet from the ledge that is just silly. I would look for an amazing contemporary wallpaper for above the trim and a coordinating color of paint for the bottom. When you have the money change those spindles to something much simpler if you like contemporary.I love a touch of metallic. Remove the carpet from the stairs and paint the spindles white, A nice sized round table with gold legs and glass top with a fab lamp with a gold lined shade in either white or black depending on the wall paper and a vase for fresh flowers when you entertain or just for everyday.

Here is another picture