Will the Special Tourist Bus to Jinshanling operate on October 28, 29 or 30?

I heard the special line only operates on Sat. and Sun. and holidays, so you may not catch the special line.

If possible, change your plane a little and go for this trip during Sat. and Sun.
If not, you can take the bus line 980 from Dongzhimen Bus Station to reach Miyun first and then hire a local taxi to reach the wall.