score:2
Disclaimer, my Greek is non-existant.
Have a look at the web site : https://parnassos-ski.gr/ (or better https://parnassos-ski.gr/map_info/)
There is a map with the different areas; the resort has two bases.
There are 2 parking areas.
the one on the left side, at 1650m altitude only has tickets. at altitude 1850 , there seems to be rental (if I can read the image correctly), but no parking.
The one on the right side at altitude 1750, there is parking and rentals and other amenities. This seems to be main base; this would be where I would go.