Vá até a vitrine e passe pela escada rolante; o provador fica logo ali.

Vá is the affirmative imperative form of ir for você.

• ir = to go
• você vai = you go / you are going
• vá = go!

In Brazilian Portuguese, when you give a command to someone using você, you usually use the present subjunctive form as the imperative:

• Vá até a vitrine. = Go to the display window.

So vai is not the right form here for a polite/direct instruction.

Yes. Vá and passe both match the você command pattern.

So the sentence is giving directions in a neutral or polite way, like:

• Go to the display window and pass by the escalator...

If it were using tu, the forms would be different in many varieties of Portuguese.

Here, até means something like up to, as far as, or simply to in the sense of reaching a point.

• Vá até a vitrine = Go up to the display window / Go to the display window

It gives the idea of moving until you reach that location.

A learner may expect para, but até is very natural when the speaker is thinking of a destination point you should go as far as.

Vitrine usually means a shop window or display window.

In a store context, it is the area where products are displayed for customers to see. Depending on context, it can also mean a display case or showcase, but in shopping directions it often refers to the front display area.

So here it likely means something like:

• the display window
• the storefront display

It comes from the verb passar, which often means to pass.

• passar por = to pass by / go past
• passe pela escada rolante = pass by the escalator / go past the escalator

So the person is being told to move past that landmark.

This is a very common way to give directions in Portuguese: use a visible object as a reference point.

Because pela is the contraction of por + a.

• por + a = pela
• por + o = pelo
• por + as = pelas
• por + os = pelos

Since escada is feminine (a escada rolante), por a escada rolante becomes pela escada rolante.

So:

• passe pela escada rolante = go past the escalator

Yes, more or less. Literally:

• escada = staircase / stairs
• rolante = rolling / moving

Together, escada rolante means escalator.

This is the normal everyday Brazilian Portuguese word for escalator.

In Brazilian Portuguese, provador usually means fitting room or changing room in a clothing store.

It comes from the verb provar, which in shopping contexts means to try on.

So:

• provar uma roupa = to try on a piece of clothing
• provador = the place where you try clothes on

Even though English often uses room, Portuguese uses this noun provador, and it is masculine:

• o provador

In Portuguese, ficar is very often used to talk about where something is located.

So:

• O provador fica logo ali. = The fitting room is right there. / The fitting room is located right there.

Using estar would not be impossible in some contexts, but ficar sounds very natural when giving directions or describing location.

Compare:

• Onde fica o banheiro? = Where is the bathroom?
• A loja fica no segundo andar. = The store is on the second floor.

Logo ali means something like:

• right there
• just there
• just over there

It suggests the place is close by and easy to find.

• ali = there
• logo ali = right there / just over there

So the speaker is reassuring the listener that the fitting room is nearby.

The semicolon separates two closely related parts:

1. Vá até a vitrine e passe pela escada rolante
2. o provador fica logo ali

It works like a stronger pause than a comma, but it still keeps the ideas connected. In English, this could also be written with a period or sometimes a comma, depending on style.

It signals:

• first, the directions
• then, the result/location

Not usually in this sentence. Here it more naturally means go past the escalator or pass by the escalator.

If the idea were take the escalator, Portuguese would more likely say something like:

• pegue a escada rolante
• suba pela escada rolante depending on context

So in your sentence, the escalator is being used as a landmark, not as the means of transport.

Yes, very natural.

The sentence sounds like something a store employee might say to a customer. It uses:

• polite/direct command forms: vá, passe
• landmarks: vitrine, escada rolante
• a common location expression: fica logo ali

That makes it sound practical and conversational in Brazilian Portuguese.