has many different meanings in English.

… for the experience.
I’m waiting for Julie.
That’s for you.
And many more.

As locator of time for refers to a certain duration:
The hotel has been under construction for four years.

refers to a certain starting point.
The hotel has been open since 1865.

You use the preposition in to describe your position somewhere:
I was in the restaurant.

You use at to specify a certain point:
At 8 pm.

Into describes a movement into something:
I went into the restaurant.

You use until to say that something will continue up to a particular time:
We shouldn't wait until the tea gets cold!

We use by to say that something will happen before a particular time:
We will finish this by 7 o'clock.

From-to describes a timeframe:
The restaurant is open from 10 in the morning to 11 at night.

For: many different meanings
e.g. locator of time: for four years
Since refers to a certain starting point.
In: your position somewhere