Facciamo un giro sulla ruota panoramica prima di pranzo.

Facciamo is the 1st person plural form of fare.

In Italian, that form can do two jobs:

• a normal present tense: we do / we make
• a suggestion or invitation: let’s do...

So in Facciamo un giro..., it works like an English Let’s...

Also, fare un giro is a fixed expression. It does not literally mean make a ride/turn. It means something like:

• go for a ride
• take a ride
• go for a spin
• sometimes even go for a walk / look around, depending on context

So Facciamo un giro sulla ruota panoramica means Let’s take a ride on the Ferris wheel.

Functionally, yes; grammatically, not exactly.

Italian does not have a special separate 1st person plural imperative form like English let’s. Instead, it uses the present indicative form.

So:

• Facciamo! = Let’s do it!
• Andiamo! = Let’s go!

So the form is present tense, but the meaning is exhortative: let’s...

Giro literally means turn, round, or circuit.

In everyday Italian, fare un giro is extremely common and can mean different things depending on context:

• take a ride
• go for a walk
• go around
• have a quick look around
• take one turn/circuit on a ride

In this sentence, because of sulla ruota panoramica, un giro means a ride / one round on the Ferris wheel.

Sulla is the contraction of:

• su = on
• la = the

So:

• su + la = sulla

It agrees with ruota, which is a feminine singular noun:

• la ruota
• sulla ruota

In this sentence, sulla ruota panoramica means on the Ferris wheel.

Because the most natural idea here is on the ride / on the attraction, not literally inside it.

Italian often uses su with rides and attractions in ways that match English on:

• sulla giostra
• sulle montagne russe
• sulla ruota panoramica

You may sometimes hear other prepositions in different contexts, but sulla ruota panoramica is very natural for on the Ferris wheel.

Literally, it means panoramic wheel.

• ruota = wheel
• panoramica = panoramic / scenic

It is the normal Italian term for a Ferris wheel, because it is a wheel that gives you a wide view.

So this is a vocabulary item worth learning as a set:

• la ruota panoramica = the Ferris wheel

Because panoramica is an adjective agreeing with ruota.

• ruota is feminine singular
• so the adjective must also be feminine singular

That gives:

• ruota panoramica

If the noun were masculine, you would use panoramico instead.

Because prima di is the normal structure for before when it is followed by:

• a noun: prima di pranzo
• an infinitive: prima di partire

So:

• prima di pranzo = before lunch
• prima di uscire = before going out

That is the standard pattern.

Because pranzo here means lunch in a general time-of-day sense, not a specific lunch event.

With meals, Italian often omits the article in expressions of routine time:

• prima di pranzo = before lunch
• dopo cena = after dinner
• a colazione = at breakfast

If you say del pranzo, you are usually referring to a specific lunch:

• prima del pranzo di domenica = before Sunday lunch
• prima del pranzo con i clienti = before the lunch with the clients

So prima di pranzo is the natural choice here.

Because Italian usually doesn’t need subject pronouns when the verb ending already shows the subject.

• facciamo already tells you it means we
• so noi is normally unnecessary

You would add noi only for emphasis or contrast, for example:

• Noi facciamo un giro, voi aspettate qui. = We’ll take a ride, you wait here.

In a normal sentence, just Facciamo... is perfectly natural.

Yes, but the meaning shifts a little.

• Andiamo sulla ruota panoramica = Let’s go on the Ferris wheel
• Facciamo un giro sulla ruota panoramica = Let’s take a ride on the Ferris wheel

The second one is a bit more specific and idiomatic because it emphasizes taking a turn/ride, not just going to it or getting on it.

Yes. Italian word order is flexible.

You can say:

• Facciamo un giro sulla ruota panoramica prima di pranzo.
• Prima di pranzo, facciamo un giro sulla ruota panoramica.

Both are correct.

The version with prima di pranzo at the end is very neutral. Putting it at the beginning gives a little more emphasis to the time idea: before lunch.

No. That expression is broader than English take a ride.

Depending on context, fare un giro can mean:

• go for a walk
• go for a drive
• take a lap / turn
• look around
• make a quick trip

Examples:

• Faccio un giro in centro. = I’m going for a walk / quick trip downtown.
• Facciamo un giro in macchina. = Let’s go for a drive.
• Facciamo un giro sulla ruota panoramica. = Let’s take a ride on the Ferris wheel.

So the context tells you what kind of giro it is.