Peter: I gave him the Benadryl at 7 pm, an hour before bedtime. He fell asleep around 8:30 pm. It (obviously) did not knock him out, but it did make him calmer and a bit more cooperative. He still woke up throughout the night (3 times), but was easier to get back to sleep. And he woke up in a good mood, so what sleep he did get was good sleep.
Billy: the doctor said strep throat, but didn't do a culture. At 4 pm on a Friday afternoon, we weren't going to argue diagnosis. I can't remember the last time the kid was on antibiotics, so there's no harm in giving him some now, even if it's just a virus.
Fritz: has contracted whatever Billy has. Well, I guess it will be a quiet weekend. I'll put a big QUARANTINED sign on the door.