Another solo cruiser here! I've recently retired ( I'm 61) and have booked two solo cruises.
I'm in Australia and have traveled most of the country except for Darwin and Broome, and I really don't fancy driving to the other side of the country, especially such isolated areas, on my own, so I bit the bullet and booked a 28 day cruise around Australia with Princess for March 2026. You've got to book early for the big cruises, they seem to sell out super fast.
To test myself and see how I would go on a cruise on my own ( I've previously cruised with friends and family), I've booked a 5 day cruise to Moreton Island for March 2025. It's mostly sea days which is fine, since the round Australia has a lot of sea days, and a day at a beach resort.
I'm sure I'll be fine, since I live alone and have travelled alone for most of my life, and I'm not a very social person, although I do enjoy the shows and trivia etc.