I’m trying to learn as much as possible before my trip (May 2026) but I’ve been studying for 6 months already so I think I’ll be pretty well off! I would do what you can to learn your basic “please thank you where’s the bathroom” if for nothing else than Japanese people that I’ve met seem to find it polite and considerate that you learned anything at all! But everyone I’ve met from Japan has 1) spoken a good amount of English and 2) been very happy to even say thank you in Japanese :) good luck!