Things have sure changed.
My older son went to LDAC when it was at Ft. Lewis in Tacoma WA, we live a little over an hour north so we attended his graduation. At that time they did not have a Family Day the day before, you arrived about an hour before the graduation, sat in the stands and when it was over you picked up your cadet and left if you had made those arrangements beforehand. Our son was leaving the next day for CTLT so he spent the night at home and then we took him to the airport.
Our youngest was part of the first LDAC at Ft. Knox, they didn't have any Family day either, just the graduation ceremony, not worth the trip from Seattle. Back then it seemed that for the most part only families that lived close enough to drive made the trip. The majority of the families were there for their cadets that were going through the end of camp Commissioning ceremony.
I remember asking their Master Sergeant about going, his response was "Why, they're just graduating LDAC, they have another year before they commission" He was a pretty tough dude.
Sounds like they make a bigger event out of graduation now, and they have a lot more for the families to do, plus having a day to spend with your cadet. We didn't see him until we saw him march by, there was no contact with them before graduation. I will say it's great for families that have no real connection to the Army to be able to see their DS/DD in a true Army setting and get an idea of what that's like and what they may be doing for the first time.