Thanks for the CX data points James. I have not done as many searches on CX as I have on JL and had not yet found that.

For JL I have done quite a few searches over the years and I cannot recall ever seeing a JL US-TYO segment marriage restricted. Not to say they have not ever been, just that in all my searches I have never come across it. I have seen many inter-Asia JL flights married restricted. Both married and divorced restricted. It is very common. Now that I think back on it, I have also seen a few US-TYO segments in the past that were Point Of Sale restricted (no space with USA POS, space available with JP POS - and AS only sells with US POS).