Conversation so far:
What do Spanish people do on Christmas day?
Most people in Spain go to Midnight Mass or 'La Misa Del Gallo' (The Mass of the Rooster). It is called this because a rooster is supposed to have crowed the night that Jesus was born
What do Spanish people eat for Christmas dinner?
The Top 10 Spanish Traditional Christmas FoodsEntremeses platter © Tamorlan / WikiCommons. Seafood. ...Seafood © Maxim Krayushkin/Flickr. ...Roast suckling pig © fevol / Pixabay. ...Roast lamb dinner © JudyMcAuliffe / Pixabay. ...Sopa de Galets © Emi Yañez / Flickr. ...Turrón © Lablascovegmenu / Flickr. ...Spanish polvorones © Roinpa / WikiCommons. ...Roscon de Reyes ©Tamorlan.

Question: How about on Christmas eve
Self-contained rewrite: What do Spanish people eat on Christmas eve?