Halloween // First Halloween tips

Hi! This year I will spend my first ever Halloween in a country that celebrates it, in London. I'm super excited but I am not familiar with the traditions. Do you guys have any suggestions on things I should definitely try or do? Unfortunately, I'm a bit old to trick-or-treat :) Thank you!

​

https://preview.redd.it/p559sqaruig51.png?width=1280&format=png&auto=webp&s=19b1418dd206874327b0567c3c0398c4d34c1e6b