Non veni pacem mittere, sed gladium.
When I went to Sydney on Rest and Recuperation leave from the war in the old Republic of Viet Nam (I love saying, "the old Republic"!), they were still working on the opera house, and it wasn't yet open to the public.
That's a pretty good joke!
I made it to Sydney in Sept of 68 on R&R as well. Somewhere I have a couple of photos of it along with the Sydney Harbor bridge. Stayed at the Crest? Hotel.