You might be better off to come in the mid afternoon (3:00) if you are driving
Drive from Disney and within 20 minutes be at the parking garage at City Walk.
Park the car in the garage and do a light meal or drinks at City Walk before you go to the park.
If you have the ap, enter the park before 5:00 and stay in a holding area
If you don't have the ap, be in the line by 5:00 and wait out your time until the park does open up at 6:00.
Thursdays by mid October tend to have more crowds.
Wednesdays seems to be lighter for when I went in October.
Now it varies each day on how long it takes to park and go through the metal detectors at City Walk.
I've noticed when in City Walk, more are entering the area about 4:30 on some days
I find that crowds grow during the hhn season.
Columbus Day weekend grows each year.
HHN dates after that time period, tend to grow through the middle of October.
What day of the week are you planning to attend hhn?