Breakdown of Cieszę się na twój debiut i mam nadzieję na udany biwak.
i
and
mieć
to have
twój
your
na
on, at / to (motion toward) / for (a meal) / for (waiting for)
Questions & Answers about Cieszę się na twój debiut i mam nadzieję na udany biwak.
I learned before that 'to be happy about something' is cieszyć się z. Why use na here?
You use cieszyć się z plus the Genitive case when you are happy about something that is currently happening or already happened. However, when you use cieszyć się na plus the Accusative case, the meaning changes to anticipation: you are looking forward to a future event.
The preposition na requires the Accusative case here, but twój debiut and udany biwak look like they are in the Nominative case. Why didn't they change?
They actually are in the Accusative case! Both debiut and biwak are inanimate masculine nouns. For inanimate masculine nouns, the Accusative form is always identical to the Nominative (dictionary) form.
Does the phrase mieć nadzieję always take na?
When you want to say you hope for a specific noun or event, yes, it takes na plus the Accusative case. If you want to say you hope that something will happen, you would use mieć nadzieję, że followed by a new clause.
Is biwak the most common word for a camping trip?