Al final fuimos a un chiringuito cerca de la playa y acabamos por comer allí.

Here al final means in the end, after all, or eventually.

In many cases, al final and finalmente can be similar, but they do not always feel exactly the same:

• al final often sounds more like after everything / when all was said and done
• finalmente often sounds a bit more neutral or formal, like finally

So in this sentence, Al final fuimos... suggests that maybe there were other possibilities or some hesitation, and this was the outcome in the end.

Examples:

• Al final fuimos a la playa. = In the end, we went to the beach.
• Finalmente fuimos a la playa. = Finally, we went to the beach.

Both are possible, but al final is very common in everyday speech.

A chiringuito is a very Spanish cultural word, especially common in Spain.

It usually means a small informal bar or restaurant, often:

• near the beach
• outdoors or semi-outdoors
• casual
• serving drinks, tapas, fish, seafood, snacks, etc.

In Spain, if someone says un chiringuito cerca de la playa, most people will imagine a relaxed beach bar.

So although it can be translated as beach bar or beachside snack bar, the Spanish word carries a specific local feeling that English does not always capture perfectly.

Yes — fuimos can be from both ir and ser in the preterite.

Here it is from ir, because the sentence is talking about going somewhere:

• fuimos a un chiringuito = we went to a beach bar

Why not ser? Because ser would need a different kind of meaning, such as identity or description:

• Fuimos amigos = We were friends
• Fuimos al bar = We went to the bar

So the context tells you which verb it is.

It uses the preterite because the sentence describes a completed event in the past:

• fuimos = we went
• acabamos por comer = we ended up eating

The speaker is telling a sequence of events that happened and finished.

If you used the imperfect, it would suggest something more habitual, ongoing, or descriptive, which would not fit as well here.

Compare:

• Fuimos a un chiringuito. = We went to a beach bar.
• Íbamos a un chiringuito. = We used to go / We were going to a beach bar.

In this sentence, the speaker is narrating what happened on one particular occasion, so the preterite is the natural choice.

Because ir normally takes a to indicate destination.

• ir a un sitio = to go to a place

So:

• fuimos a un chiringuito = we went to a beach bar

If you said en un chiringuito, that would describe location, not movement:

• Estábamos en un chiringuito. = We were in/at a beach bar.

So:

• ir a = movement toward a place
• estar en = being in/at a place

In standard Spanish, cerca is followed by de:

• cerca de = near
• lejos de = far from

So:

• cerca de la playa = near the beach

Native English speakers often want to say near to, but Spanish does not work that way here.

Correct:

• Vivo cerca de aquí.
• Hay un bar cerca de la playa.

Not standard:

• cerca a la playa

Acabar por + infinitive means to end up doing something or to finally do something, often after hesitation, circumstances, or as the eventual result.

So:

• acabamos por comer allí = we ended up eating there

It suggests that eating there may not have been the original plan, but that is what happened in the end.

This structure often implies:

• an outcome
• a final decision
• something that happened after considering other possibilities

Examples:

• Acabó por aceptar. = He/She ended up accepting.
• Acabaron por irse. = They ended up leaving.

They are completely different structures.

acabar por + infinitive

Means to end up doing something.

• Acabamos por comer allí. = We ended up eating there.

acabar de + infinitive

Means to have just done something.

• Acabamos de comer. = We have just eaten.

This is a very important distinction because the forms look similar but mean very different things.

Compare:

• Acabó por llamar. = He/She ended up calling.
• Acabó de llamar. = He/She just called.

Because after acabar por, Spanish uses an infinitive.

So the pattern is:

• acabar por + infinitive

Examples:

• acabar por ir
• acabar por aceptar
• acabar por comer

That is why the sentence says:

• acabamos por comer allí

and not:

• acabamos por comimos

The finite verb is already acabamos, so the next verb stays in the infinitive.

Allí means there.

In this sentence:

• comer allí = to eat there

For many learners, ahí, allí, and allá can be confusing. In everyday speech, the differences are not always huge, but broadly:

• ahí = there, near the person you are speaking to or at a known point
• allí = there, over there, a bit farther away
• allá = over there / in that area, often less precise

Here allí sounds very natural because it refers back to the chiringuito as the place where they ended up eating.

You could also hear ahí in some contexts, but allí is a very good standard choice.

Often, yes — at least it suggests that eating there was the final outcome, possibly after some uncertainty.

The nuance of acabar por + infinitive is often:

• it was not necessarily the original intention
• things led to that result
• that is what happened in the end

So the sentence gives a feeling like:

• maybe they just went there for a drink
• maybe they were considering other places
• but in the end they ate there

It does not absolutely guarantee a change of plan, but that is a very common implication.

Yes. Terminamos comiendo allí is also very natural and often means almost the same thing:

• acabamos por comer allí
• terminamos comiendo allí

Both can mean we ended up eating there.

The difference is mostly stylistic:

• acabar por + infinitive can sound a bit more like eventually / in the end
• terminar + gerundio is another very common way to express an eventual outcome

Examples:

• Acabó por quedarse.
• Terminó quedándose.

Both are correct and natural.

The sentence is very natural as written:

• Al final fuimos a un chiringuito cerca de la playa y acabamos por comer allí.

Spanish word order is flexible, but this version sounds smooth and neutral.

A few points:

• Al final is placed first to frame the whole sentence: in the end
• cerca de la playa comes right after chiringuito to describe it
• allí comes at the end, which is common for adverbs of place

Other orders may be possible, but they may sound less neutral or more emphatic. For example:

• Fuimos al final a un chiringuito... is possible in some contexts, but less natural here
• ...y allí acabamos por comer is also possible, but puts more emphasis on there

So the original order is a very standard everyday way to say it.