Learn Spanish (Latin America): Mañana vamos a jugar fútbol en el parque. - Tomorrow we are going to play soccer in the park.

This sentence uses the near future formula you are learning right now: a conjugated form of ir (to go) + a + an infinitive verb (an unchanged verb). Here, vamos means "we are going", a connects the words, and jugar means "to play".

Why isn't there a word for "we" (nosotros) before vamos?

In Spanish, subject pronouns like nosotros (we) are usually optional. Because vamos is the specific "we" form of the verb, the "we" is already built into the word itself. You only need to add nosotros if you want to add special emphasis.

Why is it just jugar fútbol? Shouldn't there be a word between them?

In many textbooks, you might see jugar al fútbol (literally "to play to the soccer"). However, in everyday Latin American Spanish, it is completely normal to drop the al and just say the sport directly after the verb, exactly like we do in English!

Does en el parque mean "in the park" or "at the park"?

It can mean both! The Spanish word en is very flexible and can translate to "in", "on", or "at" depending on what makes the most sense in English. Both translations work perfectly here.