In no particular priority order -
Perfect date 1:
(most) Every Friday evening, having a specific time when my Daughter and her children come over for supper and then we spend time enjoying Sci-Fi till late at night.
Perfect date 2:
Going out to eat (or otherwise spending quality time with) with my whole family. My son, SIL, daughter and the two grandkids.
Perfect date 3:
Sitting on the couch with my wonderful wife, and enjoying each others company (while watching season episodes of something or another - we are currently on season 5 of 24).
these, of course, are all post marriage.