We found at our state park that the rangers drive around often during the day and let people know that quiet hours are not just at night. People cannot make too much noise during the day either.
Yes at some weekends we have to make reservations six months in advance but I mark our calendars ahead of time when we have to plan ahead.
We can get in during the week but we are old enough so we do not have school children.
We often meet people who have come from states just south of us.
And the park is talking about adding sites.