"What's up my friend, do you like the party?"
Here's a breakdown:
* Que pasa: This is a common greeting meaning "What's up?" or "What's going on?"
* mi amigo: This means "my friend."
* te gusta: This translates to "do you like?"
* to fiesta: This should be "la fiesta," which means "the party."
Therefore, the correct and more natural way to say this in Spanish would be:
"¿Qué pasa, mi amigo? ¿Te gusta la fiesta?"