Demà vull cafè amb pa.

Because Catalan often puts time expressions first. Starting with Demà is very natural and helps set the time frame right away.

So Demà vull cafè amb pa is like saying As for tomorrow, I want coffee with bread.

You could move demà later, but the original order is very common and natural.

Catalan usually leaves out subject pronouns when the verb already makes the subject clear.

Here, vull already means I want, so jo is not necessary.

You would add jo mainly for emphasis or contrast, for example:

Jo vull cafè, no te.

Vull is the 1st person singular present tense form of the verb voler, which means to want.

A few present-tense forms are:

• jo vull = I want
• tu vols = you want
• ell/ella vol = he/she wants
• nosaltres volem = we want
• vosaltres voleu = you all want
• ells/elles volen = they want

So vull specifically means I want.

Because the sentence is talking about your present intention or desire concerning tomorrow.

In other words, the wanting exists now, even though the food or drink is for tomorrow.

If you used the future, voldré, that would mean something more like Tomorrow I will want..., which is a slightly different idea.

Catalan can use nouns without an article when talking about food and drink in a general or substance-like way.

Here:

• cafè = coffee, some coffee
• pa = bread, some bread

This is especially natural with pa, since bread is usually treated as uncountable.

There is also a nuance with cafè:

• vull cafè = I want coffee
• vull un cafè = I want a coffee / one coffee

So leaving out the article is not wrong; it just gives a slightly more general meaning.

Amb means with.

In this sentence, it shows that pa accompanies cafè. It does not have to mean the bread is physically mixed into the coffee.

So it means something like:

• coffee with bread
• coffee served with bread

That is a nuance question.

• cafè amb pa suggests bread as an accompaniment to the coffee
• cafè i pa simply lists two separate things: coffee and bread

So:

• Demà vull cafè amb pa = Tomorrow I want coffee with bread
• Demà vull cafè i pa = Tomorrow I want coffee and bread

Both are possible, but they are not exactly the same in feel.

It depends on the situation.

Vull is direct and means I want. That is perfectly normal when you are talking about your own plans, preferences, or intentions.

But in a café, restaurant, or shop, voldria often sounds more polite and softer, like I would like.

For example:

• Demà vull cafè amb pa. = a statement of what you want
• Voldria cafè amb pa, si us plau. = a polite request

So vull is not wrong, but voldria is often better for polite ordering.

Yes, it is understandable and grammatically fine.

Still, depending on the exact situation, a speaker might choose a slightly different version:

• Demà vull cafè i pa. if they mean two separate breakfast items
• Demà vull un cafè amb pa. if they mean one coffee with bread
• Demà voldria cafè amb pa. if they want a more polite tone

So the given sentence works, but Catalan speakers may adjust it depending on nuance and context.

A few useful points:

• demà is stressed on the last syllable: de-MÀ
• cafè is also stressed on the last syllable: ca-FÈ
• vull is one syllable

Also:

• In most Catalan varieties, v is pronounced much like b
• The ll in vull is not exactly like a plain English l
• Depending on the dialect, ll may sound more like a palatal ly sound or something closer to y

The most important beginner point is this: the accents in demà and cafè tell you where the stress goes.