Fairy fashion echoed that of the country in which they lived. In Scotland, they wore plaid kilts, and in Ireland dressed like the Irish. Fairy women were the finest spinners and weavers in the world, making cloth as fine as cobwebs, which seems only fitting for a race made of congealed air. They had no religion, but would flee when humans invoked God or Jesus. Fairy relations with humans are always strange and often tragic.
Time passes differently among the fairies.
What seems like a few days or weeks in Elfland can be decades in the mortal world. Kirk's informants told him of vast underground halls, lit by perpetual lamps, where hundreds of fairies feasted and roistered down the ages. Most people have heard of changelings, where a human baby is taken away from its parents and a defective fairy child left in its place. But the Subterraneans did not balk at taking adults away too. They particularly liked women who'd just given birth.