I realized that Connor is at the age that he will remember, albeit vaguely, these events. I remember my birthday party during my kindergarten year, and I am sure that he will remember his. We are at the point that he will be actively remembering the events that shape who he will become.
This is one of the reasons that I support birthday parties. They serve as a sort of anchor for our memories, which are otherwise such skittish things. While I don't perfectly remember one birthday to the next, major occurrences between the birthdays and at the birthdays themselves have helped keep a relatively accurate timeline of my past.
I hope that Connor's party was memorable enough to serve as that anchor. Hopefully, he will remember the Batman/silly-string obstacle course, the new bike, the table of bubbles, and other elements to remember what it was like to be six turning seven. Too many people forget their own past and the events that helped shape who they are. They forget what they were like as a child. May this birthday party help Connor avoid such a fate.