light shoes for the boat, it's also possible to stay barefoot
sun-protection:
peaked cap or hat (with a ribbon because of the wind!)
1 shirt with long sleeves and a light trouser (as sunprotection on the hikes and for snorkelling)
sufficient sun-block with a high protection factor
lipstick with sun protection
personal toilet articles
personal medicines, including sea-sickness relief (all in hand-luggage)
photographs:
camera with waterproof bag or plastic-bag
enough film ( 1 to 2 rolls a day, even if you don't believe it)
enough batteries
optionally field-glasses
battery chargers: we have 110 V in the plug socket
1 water bottle for the hikes (can be a Pet bottle from a soda)
optionally diving suit for snorkelling from May to December
various:
reading
diary
writing utensils
Eventually a surprise for the crew - they all like chocolate - or a small souvenir from your country to let something of you back in Galapagos (the only thing you can leave on the islands)
TIPPING: usual on board of the Angelito is, that passengers will find 2 envelops in the cabins the last afternoon of the cruise: one is for the 7 crew members and 1 for the guide. Reasonable are approximately 50 US$ per passenger for the envelop for the crew and US$ 20-30 US$ per person in the envelop for the guide)