I am back from my trip, some gear was extra, and some was missed.
Camera Gear
I never once took out my 14-24. There were many cases where I took out the 24-70, but I used the 100-400 more than anything.
What I don't know is if I used the teleconvertor more than the base 100-400.
There were a few cases where I wish I had my 70-200, but not enough that I regret not bringing it.
If space is an issue, than I think 24-70, 100-400, and a teleconvertor is a great combination.
If I do it again, I will wish for a little more reach sometimes, and I think I would bring the 24-70, 70-200, and 180-600 with a teleconvertor.
My only worry is weight and getting through the restrictions that AerolĂneas Argentinas has on their flights.
I never took out my tripod either. There was one case where I thought I might use it, and I didn't.
There is so much light there, don't waste the weight. I don't believe anyone in my group used a tripod at all.
Also, I brought a bunch of toe warmers with the intention of putting them in my battery case while outside.
I never once took my battery case out of the ship. I just had a full battery in my camera, and tucked an extra battery inside my coat.
There was only one time where I exhausted my first battery. You are rarely outside for more than two hours, so adjust for how long you think your camera and batteries would last in two hours.
I also brought all my ND filters, and I only ever used CPLs, there is just no space or time to do any long exposure, but the CPLs were priceless when shooting the icebergs and glaciers.
Speaking of CPLs, I love magnetic filters, but I don't trust them for an environment like Antarctica.
While in the zodiacs, I knocked off my CPL numerous times in our first expedition, and switched to a screw in filter after that.
Losing a filter into the water would be bad enough, but also leaving behind metal, glass, and magnets in a pristine environment would be embarassing. Don't do it.
Clothing
As for the clothing, I ended up bringing four days worth of clothing, and wore each thing two, sometimes three days...and I hated it.
I also took some extra pants layer that I never used.
The entire time I was there, the temperature stayed around 0C (32F).
I wore a Smartwool 150 base layer, prAna Zion pants, a hoodie, and some Smartwool light cusion socks, and was often too warm on the ship.
While out on our expeditions, I added a puffy coat, the coat provided by Polar Latitudes, and some insulated waterproof pants, and some thicker wool socks over the Smartwool, and only once was I too cold, but that was after more than 2 hours on the water.
If I do it again, I will take less layers and more clothes. I could easily fit six days of clothing in less than 23kg (50lbs). I was at 18.5kg with what I brought in my checked baggage, and that included my tripod.
Anti-Nausea
Now, let's talk about the Drake, the waves, and dramamine.
I brought patches, dramamine, and some anti-nausea wrist bands.
I bought the patches from Amazon and I think they were fake, other people with patches were talking about how they were affecting them, and I felt nothing.
I think the wrist bands were useless, they are meant to be on a specific point on your wrist, and they kept moving, so they were never in the right place.
I do think the dramamine helped some, I bought the non-drowsy kind, but I only ended up taking one pill.
Even during the worst of our time on the Drake (4 meter swells), I wasn't bothered. We got the lake on the way home.
So, maybe look elsewhere for nausea advice, but do not buy patches from Amazon, get a prescription if available in your country.