Questions & Answers about Посетитель идёт в кафе.
Идёт is from идти, which means to go on foot in one direction or right now.
So Посетитель идёт в кафе suggests that the visitor/customer is:
- going on foot
- headed in one specific direction
- often understood as is going or is walking
A learner often compares this with ходит. The difference is:
- идёт = going now / in one direction
- ходит = goes regularly / goes around / goes back and forth
So:
- Он идёт в кафе = He is going to the café now.
- Он ходит в кафе = He goes to the café regularly.
The preposition в can mean in, into, or to, depending on context.
Here there is movement toward a place, so в means something like to or into:
- идёт в кафе = goes to the café
With motion toward a destination, Russian usually uses:
- в + accusative
That is why we get в кафе here.