Learn Spanish (Spain): El cliente pregunta dónde es el evento de mañana. - The client asks where tomorrow's event is.

It's true that estar is the rule for the physical location of people, places, and objects. However, there is a special exception for events (like parties, concerts, or meetings). When you are talking about where an event takes place, you must use ser. That's why it is dónde es el evento.

In English, the word order changes from 'where is the event?' to 'asks where the event is.' Does Spanish do this?

No, Spanish keeps it simple! Unlike English, which changes the word order in reported questions, Spanish usually keeps the verb right after the question word. So, the direct question ¿Dónde es el evento? stays exactly the same when it is reported: pregunta dónde es el evento.

Why is 'tomorrow's event' translated as el evento de mañana?

Spanish doesn't have an equivalent to the English apostrophe-'s' for possession or association. To say 'tomorrow's event', you have to rephrase it in your head as 'the event of tomorrow', which translates directly to el evento de mañana.