Two Questions

Hello! Learning the language and ran into two questions. I tried searching and did not have any consistent answers.

I understand how "del" and "al" are configured. However, I don't understand why the following sentence:

"I am at town cafe" —-> estoy en el cafe del pueblo

Cannot be one of the following:

A) estoy en el cafe de pueblo

B) estoy en al cafe de(l) pueblo

For A, I guess I relate it to fish sandwich and train station (which don't follow del)

For B, I am struggling with why "en el cafe del pueblo" would not have al like the sentence "I am going to the park"

Any clarity would truly be appreciated. I am trying my best to understand situations versus just memorizing.

Thanks in advance!