Hi,
https://www.spiritoftasmania.com.au/geelong-terminal/news
Looks like Melbourne is still the departure point till 23 October.
West of the Station pier in Melbourne is the Sandringham Lifesaving Club and a public park with plenty of parking and may be room to turn a caravan.
That is where we park when waiting to board the ferry.
You can also see when the vehicles start moving along Station Pier to start boarding.
Cheers
Edit
It is a bit of a Maze of small streets to get back to the Ferry if you get off the main roads, so make sure your gps is set to fastest route - NOT shortest distance.
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