JL F check-in is not as fancy as EY's but nevertheless very civilised. I've never witnessed a queue there and staff all very nice and welcoming.
There are only 8 seats in JL 777 F cabin.
seats 1A/K are usually blocked for selection (reserved to JL top tier members) so it won't be unusual to find at least one of them vacant, as shown above.
If seats 2A/K are occupied I don't select anything and ask at check-in for them to open one of the blocked seats, so far managed to get one every time.
Priority security control entrance conveniently located just after F check-in and I've never witnessed a queue there either. There was however short queue for passport control and while I was waiting there I saw the girl who checked me in running towards me. While catching her breath she repeatedly apologised for forgetting to provide the baggage tag. Her reaction was very cute but I could see she was a bit stressed so told her to calm down because everything is fine. Actually I should have noticed and requested the tag myself at check-in, especially after the EY luggage incident in the beginning of this trip.
JL F lounge is (again) conveniently located just after passport control. Unlike Australian airports, here they don't force you to walk through a maze of shops on the way to the lounge.
Inside they offer 10 minutes complementary massage and it's recommend to book early to avoid disappointment (not that it's so amazing, nothing like the QF F spa experience but still better than nothing). They also offer shoe-shine service, not the traditional way like in EK F lounge, here you leave your shoes, get slippers (they are black so it's not embarrassing to walk with them) and return after 15 minutes to get shoes back.
The lounge is very quiet, talking on the mobile is forbidden. There are dedicated booths for that, which should be the norm in all airline lounges IMO.
Food options are quite limited, there is no proper restaurant with menus, instead there is sushi chef who makes fresh salmon and tuna sushi. It goes very well with a glass of premium sake (normally there are three option to select from) drank in a proper Riedel sake glass while admiring the JAL fleet
Wines on offer are ok but nothing too interesting. Selection onboard is so much better that I never touch the wines in JL lounges. I do however touch the aged Japanese Whisky (Hibiki 17)