Because we're not as experienced as you are and fear screwing up an important date in the lives of our good friends. I enjoy friends more than photography.
Add: Remember when a group of teenagers could stand on the corner and talk about things and the police didn't feel they had to stop and ask what your doing. They trusted you.
I'm only 70 miles from EAA and go there as often as possible. Have flown in the EAA B17 twice and attended the B17 flight school. The instructor was Col. Harold D. Weekley (ret).