Tôi đã hẹn gặp bạn ở trước khách sạn sau bữa tiệc.

Yes:

• Tôi = I
• đã = past/completed-action marker
• hẹn gặp = arrange to meet / make an appointment to meet
• bạn = you
• ở trước khách sạn = in front of the hotel
• sau bữa tiệc = after the party

So the structure is basically:

Tôi / đã / hẹn gặp / bạn / ở trước khách sạn / sau bữa tiệc
I / past marker / arranged to meet / you / in front of the hotel / after the party

Đã usually marks that something is in the past or completed.

In this sentence, it tells you that the act of making the arrangement happened already. So it means something like:

• I had arranged to meet you...
• I arranged to meet you...

It does not necessarily mean the meeting itself already happened. It only clearly tells you that the arranging happened in the past.

It means I had arranged to meet you.

That is because hẹn gặp means to arrange to meet or to make a meeting appointment. So the sentence is about the plan or arrangement, not necessarily about the actual meeting taking place.

If you wanted to say I met you, you would normally use gặp rather than hẹn gặp.

Because hẹn gặp is a set expression meaning to arrange to meet.

Compare:

• gặp bạn = meet you / see you
• hẹn gặp bạn = arrange to meet you

So hẹn adds the idea of an appointment, plan, or agreement.

This is very natural Vietnamese. It is similar to English to set up a meeting or to make plans to meet.

In Vietnamese, gặp normally takes a direct object, so you simply say:

• gặp bạn = meet you

English uses meet someone, not meet with someone, in many cases; Vietnamese works similarly here.

So:

• hẹn gặp bạn = arrange to meet you

You do not need a separate word meaning with in this sentence.

Here, bạn means you.

Vietnamese pronouns depend heavily on relationship, age, and social context. Bạn is often used as a fairly neutral way to say you, especially between peers, classmates, friends, or in learner examples.

But bạn can also mean friend in other contexts. In this sentence, because it comes after hẹn gặp, it is understood as you.

Yes, trước khách sạn is also possible and often sounds a little more streamlined.

• trước khách sạn = in front of the hotel
• ở trước khách sạn = at/in front of the hotel

The word ở marks location. It is not wrong here at all; it just makes the location phrase more explicit.

So both are natural, though many speakers would happily say:

• Tôi đã hẹn gặp bạn trước khách sạn sau bữa tiệc.

It can mean both, depending on context.

• trước khách sạn = in front of the hotel
• trước bữa tiệc = before the party

In your sentence, trước is a location word because it is followed by khách sạn and appears in the phrase ở trước khách sạn.

So here it definitely means in front of, not before.

Yes. The most natural reading is that sau bữa tiệc tells you when the planned meeting was supposed to happen:

• the arrangement was made earlier
• the meeting was to take place after the party

So the sentence means something like:

I had arranged to meet you in front of the hotel after the party.

Because đã refers to the past arrangement, and sau bữa tiệc refers to the scheduled time of the meeting, the two time layers are different.

Not completely. Vietnamese allows some flexibility with time and place phrases, especially when the meaning is already clear.

For example, you could also say:

• Sau bữa tiệc, tôi đã hẹn gặp bạn ở trước khách sạn.
• Tôi đã hẹn gặp bạn sau bữa tiệc ở trước khách sạn.

But word order can affect clarity. The original sentence is understandable, but if you move things around badly, it may become less clear whether after the party refers to the time of the meeting or something else.

So while the order is somewhat flexible, speakers usually choose an order that makes the time and place easy to follow.

It is understandable and basically natural, but many speakers might slightly simplify it.

Common natural versions include:

• Tôi đã hẹn gặp bạn trước khách sạn sau bữa tiệc.
• Sau bữa tiệc, tôi đã hẹn gặp bạn trước khách sạn.

If you want to make the timing extra clear, you could also say something like:

• Tôi đã hẹn gặp bạn trước khách sạn vào sau bữa tiệc.

But in everyday speech, the original sentence works fine. The main small point is that ở is optional, so some speakers would leave it out.

Yes, in the right context.

Vietnamese often drops subjects and objects when they are already understood. So if it is obvious who is speaking, someone might simply say:

• Đã hẹn gặp bạn ở trước khách sạn sau bữa tiệc rồi.

However, in a standalone example sentence, keeping Tôi is normal and helpful. It makes the sentence complete and clear for a learner.

Vietnamese does not use articles in the same way English does.

So:

• khách sạn can mean hotel or the hotel, depending on context
• bữa tiệc can mean party or the party, depending on context

In this sentence, English naturally translates them as the hotel and the party, but Vietnamese does not need separate words for the.

Context does that job.