I've just booked with JL (LAX based team as I was in that timezone) for the first time as I wanted to avoid QF and my first international flight was with JL.

Took a bit of convincing that telephone was booking possible as they want me to book direct using the OW online tool.

I explained a) the tool wouldn't let me book as it was throwing an error and b) some dates would need to be open dated as >330 days out (which the RTW fares allow).

They then asked me to use the JAL website for multi-city booking - but I explained that only allows 6 segments...

So eventually they very patiently took down my itinerary over the phone, and then sent to the back office for verification and pricing.

The JAL team is far quicker in turning this around than BA (i.e. a few hours rather than few days) which makes a big difference when some airlines only hold seats until next day, causing you to start all over again...

It took a few tweaks with flight availability and routing to fit the GLOB rules, but overall I'd give JAL 5/5 for their diligence and keeping their promises re following up.

My itinerary FWIW
NGO-HNL-SEA-YLW-LHR // LHR-ATH-LHR // LHR-PER-BNE-ADL //SYD-HND-OKA-NGO
Using JL / AS / WS / BA / QF / JL / NU on OW RTW Global Explorer, just less than 34,000 miles (LGLOB34).