—GENERAL TIPS

Santorini Airport is TINY but can get very busy. Also their food options suck and are overpriced, low key get takeout somewhere before you go to the airport and just take it though security unless you want to spend ungodly amounts of money for sub par food.
YOU WILL NEED CASH
Santorini is the island, but the major spots are Perissa, Fira (also seen as Thira- Fira refers to the capital city. Thira is the name of the Island, Santorini is the more popular nickname of the island), and Oia.
I highly highly recommend a sunset cruise!! Not sure if they operate in the colder months but it was so fun and only around $100 for a half day sailing around the island. Use Viator to book any tours, they have the best tour prices from what I saw (I recommend them for any other destination as well! I have used them in Greece and the US and plan to use them in other countries as well- they round up every tour option on one website).

@ the sunset catamaran cruise: a full day excursion including wine/beer, lunch, dessert, + dancing 🌊