عملنا حجز مسبق.

عملنا comes from عمل = to do / to make.

Here, عملنا means we did or we made, but in natural English the whole phrase is better understood as we made a reservation or we booked.

In Levantine, عمل is very commonly used in expressions where English uses make, so عملنا حجز is a very normal way to say we made a booking/reservation.

The ending -نا means we.

So:

• عمل = he did / made
• عملنا = we did / made

Arabic verbs often include the subject inside the verb itself, so you do not need a separate word for we unless you want extra emphasis.

حجز means reservation, booking, or the act of reserving.

Depending on context, it can refer to booking:

• a hotel room
• a flight
• a restaurant table
• tickets
• an appointment

So عملنا حجز is literally we made a reservation.

Both are possible.

• عملنا حجز = we made a reservation
• حجزنا = we reserved / we booked

The first one is very common in colloquial speech because it uses a light verb plus a noun, similar to English make a booking. The second one is shorter and also natural.

So this is mostly a style difference, not a big meaning difference.

مسبق means prior, advance, or in advance depending on how it is used in the sentence.

In حجز مسبق, it literally means advance reservation.

So the whole sentence means something like:

• We made an advance reservation
• We booked in advance

In this sentence, مسبق is acting like an adjective describing حجز:

• حجز مسبق = an advance reservation

If you said مسبقًا, that would be more like the adverb in advance, as in:

• حجزنا مسبقًا = we booked in advance

In everyday Levantine, speakers often avoid or reduce the formal adverb ending -ًا, so حجز مسبق sounds very natural.

Because in Arabic, adjectives normally come after the noun they describe.

So:

• حجز مسبق = literally reservation advance
• natural English = advance reservation

This is a very common word order in Arabic.
Another example:

• بيت كبير = big house
• literally house big

Without ال, the phrase is indefinite, so it means:

• a reservation
• an advance reservation

That fits well here, because the speaker is simply saying they made a reservation.

If you add ال, you get:

• الحجز المسبق

That means the advance reservation or the pre-booking, which sounds more specific and often more formal.

It is understandable and natural, but مسبق can sound a bit more formal or semi-standard than very casual everyday speech.

In conversation, many Levantine speakers might also say things like:

• حجزنا من قبل
• حجزنا قبل بوقت

Both give the idea of we booked earlier / in advance.

So عملنا حجز مسبق is perfectly good, especially in travel, service, or customer-language contexts, but it is slightly more polished than the most casual spoken phrasing.

Yes. حجز is a general word for booking/reservation, so this sentence can work for many situations, such as:

• hotel reservations
• restaurant reservations
• flight or ticket bookings
• appointments

If you want to be more specific, you can add what was reserved, for example:

• عملنا حجز بالأوتيل = we made a hotel reservation
• عملنا حجز لطاولة = we reserved a table

If you say only عملنا حجز, it simply means:

• we made a reservation
• we booked

When you add مسبق, you specifically add the idea that it was done ahead of time.

So:

• عملنا حجز = we made a reservation
• عملنا حجز مسبق = we made a reservation in advance