مددنا الحجز لبكرا، وتسجيل المغادرة الصبح.

Not completely. It is a mixed-register sentence, which is very common in real life.

• لبكرا and الصبح are clearly everyday Levantine.
• تسجيل المغادرة sounds more formal or administrative, like hotel/front-desk language.

So a native speaker could absolutely say this, especially in a hotel context. Spoken Arabic often mixes colloquial words with more formal set phrases.

مددنا means we extended.

It comes from the verb مدّد = to extend / prolong. In casual Arabic writing, the shadda is often not written, so مددنا is standing in for مدّدنا.

The ending -نا means we, so the whole word already includes the subject:

• مددنا = we extended

Because Arabic verbs usually already tell you who the subject is.

Here, -نا on مددنا means we, so you do not need to add إحنا.

You could say إحنا مددنا الحجز for emphasis, but it is not necessary. The normal, natural version is just مددنا الحجز.

Here الحجز means the reservation or the booking.

In a hotel context, الحجز is the standard word for a reservation. The ال makes it definite, so it means the reservation—the one both speaker and listener already know about.

So:

• مددنا الحجز = We extended the reservation

In this sentence, لبكرا means until tomorrow because of the context: extending a reservation.

The preposition لـ can have several meanings depending on context, such as to, for, or until/by. After a verb like extend, the most natural meaning here is:

• مددنا الحجز لبكرا = We extended the reservation until tomorrow

So even though لـ does not always literally mean until, that is the meaning it gives here.

تسجيل المغادرة is the standard Arabic expression for check-out.

Literally, it means something like registering departure, but in hotel language it simply means check-out.

This phrase is more formal than the rest of the sentence, which is why it may stand out to a learner. That is normal: in service situations, speakers often use a formal term for the hotel process, even inside otherwise colloquial speech.

Because Arabic often leaves out the verb to be in the present tense.

So وتسجيل المغادرة الصبح literally looks like:

• and check-out morning

But the real meaning is:

• and check-out is in the morning

This is very normal in Arabic. The verb is is understood and does not need to be said.

الصبح means the morning or in the morning.

In Levantine, time expressions like this are often used without a preposition, so الصبح by itself can mean in the morning.

Compared with في الصباح:

• الصبح is more colloquial and natural in Levantine speech
• في الصباح sounds more formal or MSA-like

So:

• تسجيل المغادرة الصبح = Check-out is in the morning

Usually, yes. Because the first part says the reservation was extended until tomorrow, the listener will normally understand that the morning means tomorrow morning.

If someone wanted to make it completely explicit, they could say:

• مددنا الحجز لبكرا، وتسجيل المغادرة بكرا الصبح

But in context, the original sentence is clear enough.