I've been to 5 or 6
MNSSHP, and the only ones I would really avoid are the ones on or near Halloween. Look at the prices before you decide. My guess is that Thursday may be less crowded than Friday.
When you go to a party, decide if you are going for candy, shows, rides. The second parade is definitely less crowded than the first in our experience. Our children, grandchildren went all out for candy last year. They came back with pounds...but didn't see the fireworks, they weren't interested in them. DH & I got a reasonable amount of candy, we did see the second parade without lots of people in front of us.
I do not know if I will invite a friend, or if I do what she will be interested in doing..but I am getting close to making a decision.
Bobbi