Almal wil vroeg vertrek.

Almal means everyone / everybody / all people.

It refers to a group, but it is often understood as a single collective subject, much like English everyone. In this sentence, that does not affect the verb form very much, because Afrikaans verbs usually do not change form for different subjects.

So:

• Almal wil vroeg vertrek = Everyone wants to leave early

No. Wil in Afrikaans usually means want to, not the future marker will in English.

So:

• Ek wil gaan = I want to go
• Sy wil slaap = She wants to sleep

If you want to express the future in Afrikaans, you often use sal:

• Almal sal vroeg vertrek = Everyone will leave early

That makes wil a very important false friend for English speakers.

After wil, Afrikaans normally uses the bare infinitive, without te.

So:

• wil vertrek = want to leave
• wil eet = want to eat
• wil lees = want to read

Even though English says want to leave, Afrikaans does not insert te here.

So Almal wil vroeg vertrek is correct, not Almal wil vroeg te vertrek.

This is normal Afrikaans word order.

In a main clause, the finite verb usually comes in the second position. Here, the finite verb is wil. The second verb, vertrek, stays near the end.

So the structure is roughly:

• Almal = subject
• wil = finite verb
• vroeg = adverb
• vertrek = infinitive/main action at the end

That is why you get:

• Almal wil vroeg vertrek

and not the more English-like order Almal wil vertrek vroeg.

Here vroeg is an adverb meaning early. It describes when they want to leave.

• vroeg vertrek = leave early

Vroeë is the adjective form meaning early before a noun:

• ’n vroeë trein = an early train
• ’n vroeë vertrek = an early departure

So:

• vroeg = adverb
• vroeë = adjective before a noun

In your sentence, vroeg is correct because it modifies the verb vertrek.

Usually no. Afrikaans verbs do not conjugate as much as English verbs do.

You say:

• Ek wil = I want
• Jy wil = you want
• Hy wil = he wants
• Ons wil = we want
• Hulle wil = they want

So wil stays the same. This is much simpler than English, where you have I want but he wants.

Yes, but the meaning changes.

• Almal wil vroeg vertrek = Everyone wants to leave early
• Almal vertrek vroeg = Everyone leaves early / Everyone is leaving early

The first sentence talks about desire or intention.
The second talks about the action itself.

So wil adds the idea of wanting.

Yes. Vertrek can be a verb meaning leave / depart, and it can also be a noun in other contexts.

In this sentence, it is clearly a verb because it follows wil:

• wil vertrek = want to leave

So here there is no ambiguity: it definitely means leave.

In Afrikaans yes/no questions, the finite verb usually moves to the front.

So:

• Almal wil vroeg vertrek. = Everyone wants to leave early.
• Wil almal vroeg vertrek? = Does everyone want to leave early?

This is a very common pattern in Afrikaans.

Afrikaans typically uses a double negative with nie ... nie.

So:

• Almal wil vroeg vertrek. = Everyone wants to leave early.
• Almal wil nie vroeg vertrek nie. = Everyone does not want to leave early / Not everyone wants to leave early, depending on context

The usual pattern is:

• subject + verb + nie
  • rest + nie

That double nie is a key feature of standard Afrikaans.