I go to Tokyo in 3 weeks, the planning process to far hasn't that much different. Staying off site as with all our trips, so makes dining reservations etc a bit harder.
Had no problem with language barrier as of yet, minus booking universal studios tickets for Osaka... no english booking site! It's really enjoyable to do, some great websites out there with trip reports, fb groups, forums that help along the way... I couldn't have booked it without these. Really looking forward to it!