[Failivrin]

i very much doubt that the Numenoreans could have conquered the Elves of Valinor. as FingolfintheBold said, they have the light of Elvendom shining in their eeyes, furthermore they have not been wearied by battle in Aman. Also, we are forgetting the far sight of the Elves, they would most likely have seen the fleet coming and been able to arm adequately atleast half of their force before the numenoreans arrived which would have held them back while the rest of the population was armed. finally, we are forgetting that a large number of the Noldor returned to Valinor after the defeat of Morgoth and these are supposedly the race most hungry for war.