Dream with me: Alaska cruise, money is no object

[Joel Eade]

Why 16-35 if you're already bringing the 14 and the 24-70?
Why 300/2.8 if you're already bringing the 70-200/2.8 and the 200-400/4&1.4?
Any consideration for the Zeiss 15 instead of the 14/2.8?

(And thanks for the input!)

The 14mm is for night sky images ie astrophotography (I did mean 2.8, sorry)...Zeiss would be fine just didn't think of it
(I was thinking about the 24mm 1.4 I guess)
The 16-35 is general landscape use
The 24-70 for landscape and portraits/other images on the ship.....perfect carry around lens for full frame camera, awesome IQ
The 300/2.8 for flight shots of bald eagles....light, unbelievable IQ, blazing fast AF and perfect length for close in flight shots
The 70-200mm 2.8 just to fill in these focal lengths...too good a lens not to have on the dream trip
The 200-400 f/4 ...perfect for large animals such as whales and bears....a bit heavy for hand held flight shots

Some of these over-lap in function as you mentioned but if you damage or lose one you will have some redundancy and still be able to get the shots.