"Where are they going from the hotel?"
Translation:Otelden nereye gidiyorlar?
neresi - nominative case
nereye - dative case
nerede - locative case
Nereye usually shows motion:
Nereye gidiyorsun?(Where are you going?), Nereye taşınıyorsun?(Where are you moving?) etc.
Nerede usually shows location:
Nerede yaşıyorsun?(Where do you live?), Nerede evleniyorsun?(Where are you marrying?)
I am going to the school from the airport--- I am going from the airport to the school - - - - I think both sentences are correct in English, But why this " nereye otelden gidiyorlar? " is wrong, if we said the answer of the question is " Okula otelden gidiyorlar" = I go to the school from the airport