Waitlisting into a specific fare class
I'm looking to book a specific flight on a specific day from Europe - Hong Kong. I've pulled the availability off ExpertFlyer and seen this for the first time:
JL CL DL PL IL WL RL EL Y9 B9 HL KLML LL VL SL NL QL OL
I understand that the 'L' following the fare class means waitlisting. Has anyone waitlisted into a lower fare bucket before? I'm looking to travel Y but (call me stingy) would rather not pay the Y fare and instead a, for example, V fare if I could. Can I call CX to do this and/or would travel agents be willing to help?