¿Podría usted decirme si todavía queda alguna butaca libre o si el estreno ya ha empezado?

Podría makes the question more polite and less direct.

• ¿Puede usted decirme...? = Can you tell me...?
• ¿Podría usted decirme...? = Could you tell me...?

In English, could often sounds more courteous than can, and the same idea applies here. In formal situations in Spain, especially when speaking to staff at a theater or cinema, podría is very natural.

Usted is the formal you. It is used here to sound polite and respectful.

It is not strictly necessary, because the verb form already shows formality:

• ¿Podría decirme...? is already formal.
• ¿Podría usted decirme...? adds extra emphasis or politeness.

So usted is optional, but perfectly natural.

Because me is an object pronoun attached to the infinitive decir.

• decir = to tell
• me = me
• decirme = to tell me

In Spanish, pronouns can be attached to an infinitive:

• Quiero decirte algo. = I want to tell you something.
• ¿Puede explicármelo? = Can you explain it to me?

You could also restructure the sentence, but with podría, attaching the pronoun to the infinitive is very common.

Here si means whether / if, not if in the sense of a condition.

The sentence is asking about two possibilities:

• si todavía queda alguna butaca libre
• o si el estreno ya ha empezado

So the speaker is asking:

• whether there is still a free seat
• or whether the premiere has already started

The second si is repeated because both parts are indirect yes/no questions. In English, we can sometimes omit the second whether, but in Spanish repeating si is very natural.

Because the subject is singular: alguna butaca libre.

• queda alguna butaca libre = there remains some free seat / is there any free seat left

Since butaca is singular, the verb is singular too:

• queda alguna butaca
• quedan algunas butacas

This is similar to:

• Queda una entrada. = There is one ticket left.
• Quedan dos entradas. = There are two tickets left.

Alguna means some / any, agreeing with the feminine singular noun butaca.

• alguna butaca = any seat / some seat

In English, after if we often say any:

• if there is any free seat left

Spanish often uses algún / alguna in this kind of context. It suggests at least one.

Forms:

• algún
  • masculine singular noun
• alguna
  • feminine singular noun
• algunos / algunas for plural

In Spanish, most descriptive adjectives usually come after the noun.

So:

• butaca libre = free seat
• entrada barata = cheap ticket
• película interesante = interesting film

That is the normal order. Putting the adjective before the noun is possible in some cases, but it often changes the tone or meaning. Here butaca libre is simply the standard way to say free/available seat.

Butaca usually refers to an upholstered seat, especially in a theater, cinema, or auditorium. In Spain, it sounds very natural in this context.

Compare:

• butaca = theater/cinema seat, often a more specific or formal word
• asiento = seat in a more general sense
• silla = chair

So in a venue like a cinema or theater, butaca is a very appropriate choice.

Todavía means still.

• si todavía queda alguna butaca libre = whether there is still any free seat left

It suggests that time has passed and seats may already have sold out, but the speaker hopes there may still be one available.

In many contexts, todavía and aún can both mean still:

• todavía queda una
• aún queda una

Both are correct, though todavía is often felt as very common and neutral.

Ya means already.

• ya ha empezado = has already started

It shows that the speaker is asking whether the start has happened before now.

This creates a nice contrast with todavía:

• todavía = still
• ya = already

So the sentence contrasts two possibilities:

• maybe there is still a seat left
• or maybe the premiere has already started

Ha empezado is the present perfect: has started.

In Spain, the present perfect is very commonly used for recent past events or events connected to the present moment, especially with words like ya.

So in Spain:

• ya ha empezado is very natural for it has already started

In many parts of Latin America, people might more often say:

• ya empezó

Both are correct Spanish, but ya ha empezado sounds especially natural in Spain.

Because this si introduces an indirect yes/no question, not a hypothetical condition.

After decirme si..., Spanish normally uses the indicative:

• decirme si queda alguna butaca
• decirme si ha empezado

The subjunctive would not be used here because the speaker is asking for factual information.

Compare:

• No sé si queda alguna butaca. = I don't know if there is any seat left.
• Pregunte si ha empezado. = Ask whether it has started.

These are normal indicative uses.

Estreno usually means premiere, opening performance, or first showing.

Depending on context, it can refer to:

• the first screening of a film
• the first performance of a play
• the opening event itself

So here it is not just any showing; it suggests a premiere or first official presentation.

Yes. Spanish allows some flexibility.

For example:

• ¿Podría decirme usted si todavía queda alguna butaca libre...?
• ¿Podría usted decirme si todavía queda alguna butaca libre...?

Both are correct. The version with usted before decirme sounds slightly more formal or carefully structured, but the difference is small.

The key thing is that the sentence remains polite and clear.

Yes, it sounds formal and very natural for Spain.

Features that make it sound formal:

• podría
• usted
• decirme

Features that fit Spain especially well:

• ha empezado for a recent event
• butaca in a theater/cinema context

A less formal version might be:

• ¿Podrías decirme si todavía queda alguna butaca libre o si el estreno ya ha empezado?

That uses tú instead of usted and sounds less formal.