Mam poczekać tutaj czy przy okienku?

Here mam poczekać does not mean literal possession like I have.

In this pattern, mam + infinitive usually means something like:

• Am I supposed to ...?
• Should I ...?
• Am I meant to ...?

So Mam poczekać tutaj czy przy okienku? is asking for instructions:
Am I supposed to wait here or at the window?

This is a very common Polish structure. For example:

• Mam wejść? = Should I come in?
• Mam to zrobić teraz? = Am I supposed to do this now?

It often sounds like the speaker is asking what the correct procedure is.

This is about aspect, which is very important in Polish verbs.

• czekać = imperfective
• poczekać = perfective

Very roughly:

• czekać focuses on the process of waiting
• poczekać focuses on waiting as a complete action, often wait for a bit / wait until something happens

In this sentence, mam poczekać...? sounds natural because the speaker is asking what single action they should take now:
Should I wait here / at the window?

If you used czekać, it would sound more like asking about the activity in a more general or ongoing sense. In many real situations, Polish prefers poczekać here.

Because in Polish, okienko is the normal word for a small window, but it is also very commonly used for a ticket window, service window, counter window, or reception window.

It comes from:

• okno = window
• okienko = little window

In offices, stations, clinics, government buildings, and similar places, okienko often means the place where you go to speak to a clerk through a window or glass opening.

So here przy okienku means something like:

• at the window
• at the service window
• by the counter/window

Because Polish normally uses a preposition here.

• przy = by / near / at
• przy okienku = by the window / at the service window

Without the preposition, the meaning would not work properly in this sentence.

So:

• tutaj = here
• przy okienku = at the window

The speaker is choosing between two locations.

Also notice that przy requires the locative case, which is why:

• okienko → okienku

Because the preposition przy takes the locative case.

The base form is:

• okienko = nominative

After przy, it becomes:

• przy okienku = at/by the window

This is a normal Polish case change. Some similar examples:

• przy stole = at the table
• przy drzwiach = by the door
• przy biurku = at the desk

So the ending changes because grammar requires it, not because the meaning changes.

In this sentence, czy is being used in an alternative question, where English would use or:

• tutaj czy przy okienku? = here or at the window?

So yes, here czy is functioning like or between two options in a question.

Be careful, though: czy also has another common use at the beginning of yes/no questions:

• Czy masz czas? = Do you have time?

So czy can mean different things depending on structure:

• at the start of a question: a question particle
• between options: or

Yes. You can say:

• Mam poczekać tutaj czy przy okienku?
• Czy mam poczekać tutaj, czy przy okienku?

Both are natural.

The version without initial czy is very common in spoken Polish and often sounds direct and natural.

Adding czy at the beginning can make the sentence feel a bit more explicitly like a question, especially in careful or formal speech.

Also, when Polish writes this very clearly, it often repeats czy before the second option:

• Czy mam poczekać tutaj, czy przy okienku?

That repetition is normal and elegant, but in everyday speech people often leave the first czy out.

Both mean here.

• tu = here
• tutaj = here

In most situations they are interchangeable. Tutaj can sound a little fuller or slightly more emphatic, but the difference is usually small.

So you could also hear:

• Mam poczekać tu czy przy okienku?

That would sound natural too.

Because Polish often drops subject pronouns when they are clear from the verb form.

Here:

• mam already means I have / I am supposed to

So ja is unnecessary unless you want emphasis.

Compare:

• Mam poczekać tutaj czy przy okienku? = normal
• Ja mam poczekać tutaj czy przy okienku? = I’m the one who should wait here or at the window? / extra emphasis

In Polish, leaving out ja is the default.

Yes, there is a difference.

• mam poczekać = am I supposed to wait / should I wait
• muszę poczekać = I must wait / I have to wait

Mam poczekać...? asks about instructions or procedure.
Muszę poczekać states necessity more strongly.

So in a place like an office or clinic, Mam poczekać tutaj czy przy okienku? sounds very natural because the speaker is asking what they are expected to do.

Even if the basic meaning is already clear, the sentence has a very natural situational feel in Polish. It sounds like someone asking for practical instructions in a public place, such as:

• a clinic
• a station
• an office
• a bank
• a reception desk

Depending on context, natural English translations might be:

• Should I wait here or at the window?
• Am I supposed to wait here or by the counter?
• Do I wait here or at the window?

So the Polish sentence is not just about ability or obligation in the abstract; it sounds like Please tell me the correct place to wait.