Go to Tokyo or Guam?

Never been to Guam but just completed a work trip in Japan with a week or so in Tokyo. It was an amazing experience.

If you don’t enjoy Asian food, you will not enjoy Tokyo as much as I did.

For me personally that would be a no brainer, that would be Tokyo. It wouldn't even be close.

But everyone is different. With your limited time, Guam might be a good call for you personally.

Id prob do guam just because tokyo is an easier trip if you wanted in the future. And with limited time you can probably see more in guam vs tokyo.

2 hour bullet train ride from Tokyo will take you to Kyoto/Osaka. I enjoyed it more than Tokyo.

In Japan, we made fun of other military brats that came from Guam.

You'll get along fine in any major Japanese city without knowing more than "Hello" and "excuse me," in Japanese. Nearly everything that is public in Tokyo has signage in English, partially as a part of the Olympic push. Any hotel concierge will write down instructions for taxi drivers in Japanese. Train maps are in English, etc. Even elementary aged American kids had zero problem with getting around, and generally getting into trouble with nearly zero mastery of Japanese.

The only strike against Tokyo in late Spring/Summer is the heat and humidity. Outdoors isn't bad, but in offices it can get uncomfortable. There's some weird principle pushed by the government that everyone suffers together to save money, and that starts with A/C use. I don't think I was ever in an office that was cooler than 78 F, the average office temp was probably 80-82.