Well, it might be a secret about a past event that has significant implications for the present. Maybe it involves a hidden relationship or a concealed motive. But, of course, that's just speculation until you delve into the story.
I don't have enough information about this House Castillo from the novel. However, it might be a powerful and influential house. It could have a large estate, many servants, and be involved in politics or trade. Maybe it has a unique culture within it, like special feasts or ceremonies.
Tequila originated in the area around the city of Tequila in Jalisco, Mexico. It's made from the blue agave plant. The native people in the region had been using the agave for centuries before the Spanish arrived. The Spanish influenced the production methods and later, commercial production began.
I'm not sure if the novel you mentioned really exists because I don't have enough context to confirm if it really exists. At the same time, I can't be sure if the name " Tequila " appears in the novel. If you can provide more information, I will try my best to answer your questions.
The 'pee wee tequila dance' might be a dance that originated in a particular community or event. Maybe it was created during a celebration where tequila was involved, and over time it developed its own back story. However, without more context, it's difficult to say for certain.