Tjeneren kommer med regningen til sidst.

Because Danish usually puts the definite article on the end of the noun instead of using a separate word like English the.

• en tjener = a waiter
• tjeneren = the waiter
• en regning = a bill
• regningen = the bill

So the -en ending here means the.

The basic forms are:

• en tjener
• en regning

These are both common-gender nouns in Danish, which is why they take en in the indefinite form and -en in the definite singular form.

Kommer is the present tense of komme.

• at komme = to come
• kommer = comes / is coming

In this sentence, Danish uses the present tense where English might also say comes or sometimes will come, depending on context. Danish often uses the present tense for regular events or expected actions.

Because komme med is a very natural Danish expression.

Literally, kommer med regningen means comes with the bill, but in context it means comes over bringing the bill or simply brings the bill.

So this is idiomatic Danish, especially in everyday situations like restaurants.

You could also say:

• Tjeneren bringer regningen til sidst.

That is also correct, but kommer med regningen sounds very natural in speech.

Til sidst means at the end, in the end, or finally, depending on context.

In this sentence, it means that this happens at the end of the meal or sequence of events.

A useful point: til sidst often describes order in a sequence, not necessarily the emotional finally! sense. So here it is more like:

• first you eat
• then you finish
• at the end, the waiter comes with the bill

Yes, it could go first.

The sentence as given has a very normal word order:

• Tjeneren kommer med regningen til sidst.

But Danish also allows:

• Til sidst kommer tjeneren med regningen.

That is also correct. When a phrase like til sidst comes first in a main clause, Danish normally puts the verb before the subject after that. This is the typical V2 word order pattern.

So:

• Til sidst
  • kommer
    • tjeneren
      • ...

not:

• Til sidst tjeneren kommer ...

Not necessarily.

The -en ending here is a grammatical ending meaning the. It does not mean masculine in the way an English learner might expect.

Also, job nouns in Danish often function as general role words. So tjeneren here mainly tells you the person is the waiter/server, not necessarily anything about biological sex unless the wider context makes that clear.

Both are possible, but they do different jobs.

• til sidst = at the end / in the end
• sidst by itself often means last or last time

Examples:

• Til sidst kommer tjeneren med regningen. = At the end, the waiter brings the bill.
• Sidst betalte jeg. = Last time I paid.

So in your sentence, til sidst is the natural expression because it marks the final stage of the situation.

Yes. A few natural alternatives are:

• Tjeneren bringer regningen til sidst.
• Til sidst kommer tjeneren med regningen.
• Tjeneren kommer med regningen til slut.

These are similar, but the original sentence is completely natural and everyday Danish. Kommer med regningen is especially common in normal conversation.