Well, I must thank you for pointing me towards the direction of redeeming a oneworld award instead of just a simple round-trip award - which means 155k miles instead of 180k for F class, and I get to sample new (to me) airlines and make a lot more stopovers

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Anyway, I I've been itching to try the JAL Suites but only the North American routes have it, it seems. NRT-LHR still has Skysleeper Solo. Any hints on when this route would have the suites,
JALPak?