Here's what I packed and used:
Wear on plane: yoga pants, comfy sneakers, tshirt, travel vest with phones, wallet, passport
Backpack carry on: printed docs, waterproof jacket with hood, removable fleece liner, playing cards, headphones, audio books, hand sanitizer, pen & paper, phone charger, reusable water bottle
Redeye return loungewear
Nice sweater poncho (wore often on ship)
2 long sleeve shirts
2 t shirts
2 jeans
2 leggings
Waterproof weather suit (wore twice for glacier viewings)
1 nice blouse & dress shoes
1 Swimsuit
pajamas
underwear and socks
Outdoor boots
Here's what I packed and did not use:
Snacks, powerbanks, travel pillow, and earbuds for flight
Binoculars
Scarf
Sunscreen and Bug spray
Toiletries, bandaids, tylenol, safety pins
Mosquito nets, umbrella, gloves
Extra wall charger
Ziploc bags for snacks/sandwiches, string backpack, lanyard
clothes for gym
Room signs and tape