The parkas we got on Silversea (when it was PAII)ran to size or a bit larger but they have plenty of spares to swap. The boots are just heavy mud boots and using 2 pair of heavy socks worked. They have plenty of sizes to try on. I just used an inexpensive fleece long sleeve tee shirt and that worked well. The parkas are really well insulated. There were all sorts of cameras in use from point & shoot to major lens envy professional style. The main thing we were told was how to reset histograms and whatever the old ASA setting is now called because of the abundance of white background and glare.
Penguin poop really stinks.
Jim