Does the McKinley Mall open earlier than 10:00 am for people to walk for exercise? If so, what entrances are open?

Yes and the 2 main entrances.. by Orange fitness and by Old Navy...

Yes

Yes . Honestly you can use any entrance.

People mostly use the mall entrance next to Old Navy. It's the first door opened, and closest to the food court. There's a good number of friendly regulars walking daily.

Yes, 7AM 1st floor only