More perks of flying business class with JAL consist of an additional checked bag allowance, in-flight extras like slippers and sounds-canceling headphones, and attentive assistance from the flight attendants. In addition, at the time we boarded the taxi/wait time was also extended, Together with the pilot blaming “development at SFO” https://businessflightshop.co.uk/blog/how-to-acclimatize-to-a-cruise-trip-if-you-are-a-first-timer/