Originally Posted by nshizuka25

You should be fine for Priority Check-in and Priority Boarding.

Did you make your reservation before you reached Crystal? If so I would recommend that you remove your JL FFP # and re-enter it. It would definitely help if you have your JMB Crystal status printed on your boarding pass.

JL did allow me to use JGC check-in desk while I was waiting for my JMB Sapphire membership card. (in fact it was just that morning JL's system updated me as JMB Sapphire), as a result my boarding pass says "RUBY JMX", and Airport security staff at HND Int'l terminal would not let me use Fast Track security.