<span>(A guest is a person who) that's it translated in english</span>
Hey there!
The answer is es and están. It’s es because it is a characteristic. It’s son because it’s plural, and aburridos meanest it’s a characteristic. La película es muy aburrida y mis amigos están aburridos de verla.
I hope this helps!
An example of a Hispanic celebration is a quinceañera. Usually, people in the US have a sweet 16 so it’s similar because both celebrate coming of an age.