I think it was 60% reduction by 2035 and zero emissions by 2050 is the target.
Those old ships won’t be around for long.
It’s not just the fuel used to move the ship it’s all the stuff in Hotel . Incandescent lighting,old fashioned air conditioning,water production. It all adds up.
On the edge the other week the captain said it uses 17% less fuel than a solstice.
Thats a fair bit.