Visiting Sydney soon wanting to meet like minded people

Hi I am a newly retired single woman with a young outlook on life.  I am due to visit my son, who lives in Sydney, later this year.  Whilst I want to spend time with him and his partner and new baby I would also like to meet and make friends with people of my own generation especially as I am considering a move over to Australia myself and while I am visiting would like to explore and investigate the area and it would be nice to have some company to do this with.  I am faily laid back, philosophical sort of person, interested in the arts, film and music, reading etc.  I am none too fit but try not to let that get in my way:lol:  So any contact from people interested in meeting me or suggestions on how to meet and make friends with like minded peeps and places to see would be welcome Cheers