Prima di partire, vado allo sportello automatico e prelevo contanti.

Because after prima di when the subject stays the same, Italian normally uses the infinitive.

• prima di partire = before leaving
• literally: before to leave, but in natural English we say before leaving or before I leave

So:

• Prima di partire, vado allo sportello automatico. = Before leaving, I go to the ATM.

If the subject changes, Italian usually uses a full clause instead:

• Prima che lui parta... = Before he leaves...

So in your sentence, partire is correct because the same person is doing both actions.

Prima di means before when followed by a noun or an infinitive.

Examples:

• prima di cena = before dinner
• prima di partire = before leaving / before I leave

It is a very common structure:

• prima di andare
• prima di mangiare
• prima di dormire

So a useful pattern is:

prima di + infinitive

The comma separates the introductory time phrase from the main clause.

• Prima di partire, vado allo sportello automatico...

This is similar to English:

• Before leaving, I go to the ATM...

In Italian, the comma is common here, especially when the introductory phrase comes first. It helps readability. You may sometimes see short phrases without a comma, but in this sentence the comma is natural and standard.

Italian often uses the present tense to talk about:

• habits
• routines
• planned actions
• steps in a sequence

So Prima di partire, vado allo sportello automatico e prelevo contanti can mean something like:

• Before leaving, I go to the ATM and withdraw cash.
• Before I leave, I go to the ATM and get cash.

It sounds like a routine or a normal action sequence, not necessarily something happening at this exact second.

Because the verb andare uses the preposition a for going to a place, and sportello automatico is a masculine singular noun phrase that takes the article lo.

So:

• a + lo = allo

That gives:

• vado allo sportello automatico

Why lo and not il? Because sportello begins with s + consonant (sp-), and masculine singular nouns of that type take lo:

• lo sportello
• lo studente
• lo zaino

So:

• a + lo sportello → allo sportello

Yes, in this context it means ATM or cash machine.

Literally:

• sportello = counter/window/booth
• automatico = automatic

But together, sportello automatico is the standard formal expression for an ATM.

You may also hear:

• bancomat

In everyday Italian, bancomat is extremely common and often even more common in speech than sportello automatico.

So these are both useful:

• vado allo sportello automatico
• vado al bancomat

Prelevare means to withdraw, especially money from a bank account or ATM.

So:

• prelevo contanti = I withdraw cash

It is a very natural verb in banking contexts.

You might also see:

• ritirare contanti

That can also mean to withdraw cash, but prelevare is especially standard for taking money out from an ATM or account.

Useful forms:

• prelevo = I withdraw
• prelevi = you withdraw
• preleva = he/she withdraws

In Italian, plural nouns are often used without an article when talking about something in a general, non-specific way.

So:

• prelevo contanti = I withdraw cash

Here contanti means cash in general, not some specific cash already identified.

This is similar to English, where we often say simply:

• I need cash
• I withdraw cash

You could also say:

• prelevo dei contanti

That means roughly:

• I withdraw some cash

Both are possible, but without the article sounds very natural and general.

They are related, but not the same.

• soldi = money in general
• contanti = cash, money in physical form

So:

• Ho bisogno di soldi = I need money
• Ho bisogno di contanti = I need cash

At an ATM, contanti is especially appropriate because you are withdrawing physical cash.

Because Italian usually drops subject pronouns when they are not needed.

The verb endings already show the subject:

• vado = I go
• prelevo = I withdraw

So io is unnecessary unless you want emphasis or contrast.

For example:

• Io vado allo sportello automatico, non lui. = I’m the one going to the ATM, not him.

In a neutral sentence, leaving out io is the normal choice.

Because both verbs have the same subject, and Italian, like English, often connects them with e:

• vado allo sportello automatico e prelevo contanti

This is simply:

• I go to the ATM and withdraw cash

Repeating the subject would usually sound unnecessary:

• ... e io prelevo contanti

That would only be used for emphasis.

Yes. Italian allows some flexibility in word order, though the original sentence is very natural.

For example:

• Vado allo sportello automatico e prelevo contanti prima di partire.

This also means:

• I go to the ATM and withdraw cash before leaving.

The original version puts the time phrase first:

• Prima di partire, ...

That gives a nice sense of sequence and highlights before leaving.

So both are possible, but the original sounds very natural and clear.

In real everyday conversation, many Italians would very often say bancomat.

So these are both natural:

• Vado allo sportello automatico
• Vado al bancomat

The difference is mainly register:

• sportello automatico = more formal/standard
• bancomat = very common in everyday speech

Also, in some contexts Bancomat can refer to the debit-card system as well, so context matters. But in ordinary conversation, al bancomat is often understood as to the ATM.