There are 3 buses which leave from Frankston and that stop off in Mornington,Bus numbers are
781 – Will drop off Main St, Mornington
784 – Will drop off at the Venue
785 – Will drop off Nepean Highway/ Main St, Mornington
If you are Traveling from Rosebud then you can catch the 788 which will you drop in Main St, Mornington.
You will need to catch the Frankston train, from Frankston you will then either need to catch a public bus or a taxi. There is a taxi rank located at the front of the station.
You can also visit the below link to plan your trip by public transport http://ptv.vic.gov.au/journey#jpsearch%5Baction%5D=showPlanner
There will be parking onsite for a gold coin donation, all proceeds will go to local charities.