Learn Spanish (Latin America): Es razonable siempre y cuando me consultes con previo aviso. - It is reasonable as long as you consult me with prior notice.

The phrase siempre y cuando (as long as / provided that) sets up a strict condition that must be met for something else to happen. In Spanish, conditional phrases like this always trigger the subjunctive, which is why we use consultes instead of the indicative consultas.

Could I use siempre que instead of siempre y cuando in this sentence?

Yes! In this context, siempre que and siempre y cuando are practically interchangeable ways to say "as long as" or "provided that." Both require the subjunctive. Using siempre y cuando just sounds slightly more emphatic about the condition being a strict requirement.

Why does the adjective previo come before the noun aviso?

While descriptive adjectives usually follow the noun in Spanish, adjectives that indicate order or time often come before it. Furthermore, con previo aviso is a very common fixed phrase meaning "with prior notice" or "in advance," so this specific word order sounds the most natural.

Why is it Es razonable and not Está razonable?