I think a lot of diabetics get the worst parts shoved in their faces and as a defense they shut off. 'It won't be me'. It is a survival thing. The important thing is you want to get on top of it now.
I was diagnosed on April 1 at 6 years old. For years it was horrendous. April Fools! Cept...not for me. I learned to harnass that pain. I Am Still Here. It can be so powerful. Embrace it.
I found my levels were better in Australia/NZ. No idea if that was due to heat or whatever. But once I changed the time on my pump ( an advantage I have over you), I just carried on and everything was fine. Better in fact. I learned what drinks impact me. Personally, wine is no bother. Neither is vodka though I hate it. Rum and Cider cause increases. I just had to learn what did or did not cause a rise or fall. I knew that before I traveled though. I didn't even think about it over there. We did a wine tour and loved it. (Apart from the part where one guy said this sample was so sweet it would give someone diabetics so I complained and now when my parents go next year they are getting a free tour!)
Eating out is just years of practice. Helps having had mum to. I can look at a plate and judge pretty well what carbs are in it. BUT, many places now have all that information online. And/Or if you call them you can ask for that info and they will give it to you so that helps too
It sounds like you have been to amazing places. The sights must have been mind-blowing. Which was your favourite? The sun set on Uluru was my favourite of my travels.
There is always light. Always a way forward. Always a recovery. Keep striving for it <3