Go to a hot air balloon festival. -> Been there, done that. I actually went to one of those festivals with my parents and brothers when I was a little kid. We didn't go on a ride, but it was awesome anyways =)
When my dad died, I thought he won't be able to walk me down the aisle, but I honored if my step dad would do me the honors of walking me down the aisle. That is what my dad would want. I love you daddy!