Hi beautybyfabi,
As with most graduations, seating and tickets are limited per graduate. We can only allow 4 guest tickets per graduate at this time. If however seating opens up or we don't have as many graduates as expected, we may reallocate seating for additional guest, but there is no guarantee of that.
I know many family members want to attend this special event, trust me I know. But it was the same for me way back when, and the same for my children. It's tough I know. That's why we always offer a live broadcast of the ceremony, so that any family members that cannot attend can view their loved one walk across the stage.