I was in Sydney and Melbourne last year.

I bought a Vodafone kit at either Coles or Woolworths. Maybe I went online to register it, I don't recall. But it wasn't the first time I bought one of these kits on sale at a supermarket

I also bought a Boost kit from Coles in Melbourne, with the idea of maybe using it if I used all of the data on the Vodafone SIM during my trip. Mostly because it seemed like a big bargain for like 12 AUD or something like that.

I still have it and I'm going next month so I don't know if I would be able to convert it to eSIM. I read on Whirlpool that you need their app, which again isn't on the US App Store.

If it was Vodafone or Telstra or even Optus, I suppose I could go into a store and ask if they would activate on one of their devices and convert it to an eSIM for me.

Either that or I take my older iPad, which I'd rather not do, to be able to use physical SIMs.