@Genie27 @Cordeliere and
@allanrvj , thank you for the travel opinions! I agree with all of you, I guess that's the problem. Europe seems easier mentally. I can handle any language barriers, the food, the culture, and know what cities and museums we would like, plus an 8 hr flight is not so bad. You have great suggestions for Portugal and Spain.
But Japan is sooo different. I've only been to Asia once, Bali and Jakarta, and it was amazing. It's so completely different, the smells, the air, the alphabet, lol.....it's an exciting idea to do this with her. I would be fine not visiting but since we have the chance to do this together I feel like we should try. Her list includes a lot; Tokyo, Kyoto, Mt Fuji, onsen, owl cafe, temples, all stuff we would never see anywhere else. It sounds fantastic but I wonder if it's a trip she should take with friends one day. Cordie, 18 hrs in a plane is my idea of hell, that's why I mention it. 10 additional hours of anxiety

even if it's business or first I worry that I would not sleep.