This is the 340th most frequent Spanish word.
próximos
"Next" or "upcoming."
In this sentence, 'próximos' describes 'días', indicating days that are about to come.
Los próximos días serán soleados.
The upcoming days will be sunny.
Here, 'próximos' is used to indicate closeness or proximity to the stage.
Nuestros asientos están en la fila de los próximos al escenario.
Our seats are in the row close to the stage.
'Próximos' modifies 'vacaciones' to refer to the upcoming or next occuring vacation.