Ná die lang wandeling is ons almal honger en dors.

Because ná means after, while na without the accent usually means to or towards.

So:

• ná die wandeling = after the walk
• na die park = to the park

The accent helps distinguish the two meanings. In very informal writing people sometimes leave accents out, but in careful standard writing this distinction is useful.

That opening phrase sets the time/context: after the long walk.

Afrikaans often puts a time phrase or other adverbial phrase first, just like English can:

• After the long walk, we are all hungry and thirsty.

So Ná die lang wandeling is a very natural way to start the sentence.

This is because Afrikaans follows a verb-second pattern in main clauses.

If something other than the subject comes first, the finite verb usually comes next. So:

• Ons is almal honger en dors. = subject first
• Ná die lang wandeling is ons almal honger en dors. = time phrase first, so is must come second

That word order is one of the most important sentence patterns in Afrikaans.

Ons almal means all of us.

In Afrikaans, almal often follows a pronoun in expressions like:

• ons almal = all of us
• julle almal = all of you

Almal by itself usually means everyone.
So:

• Almal is moeg. = Everyone is tired.
• Ons almal is moeg. = All of us are tired.

In your sentence, ons almal is the natural way to say all of us.

Because lang is the normal form here.

Afrikaans adjectives do not always behave the way English speakers might expect, and they do not always take an extra ending before a noun. In this phrase, the standard form is:

• die lang wandeling

So the safest thing is to learn it as the natural fixed pattern. You will see many other adjective + noun combinations where the adjective may look different, but here lang is correct.

Wandeling is a noun meaning walk, stroll, or sometimes hike, depending on context.

It comes from wandel, which is related to walking or strolling. In this sentence, die lang wandeling is simply the long walk.

A learner might also see other walking-related words in Afrikaans, such as:

• stap = to walk / step
• 'n stap = a walk
• wandel = to stroll/walk
• 'n wandeling = a walk/stroll

In sentences like this, they function like adjectives or states after is:

• Ek is honger. = I am hungry.
• Sy is dors. = She is thirsty.

So in ons almal honger en dors, they describe how we feel.

The important thing for a learner is: in Afrikaans you normally say is honger and is dors, not something like have hunger or have thirst.

Dors means thirsty.

It is a very common everyday word:

• Ek is dors. = I am thirsty.
• Is jy dors? = Are you thirsty?

So honger en dors is a very natural pair meaning hungry and thirsty.

Because one is can cover both descriptions.

So:

• ons is honger en dors = we are hungry and thirsty

This works just like English. You do not need to repeat the verb before each adjective.

Yes. If you were talking about a past situation, you would normally say:

• Ná die lang wandeling was ons almal honger en dors.

Your original sentence uses is, so it presents the state as current or relevant now: after the walk, we are hungry and thirsty.

Yes, but the meaning stays very similar.

For example:

• Ná die lang wandeling is ons almal honger en dors.
• Ons almal is ná die lang wandeling honger en dors.
• Ons is almal ná die lang wandeling honger en dors.

The original version sounds very natural because it starts with the time phrase and then follows normal Afrikaans verb-second order.