Saying “maybe” when you mean “no” wastes two people’s weekend.

A soft answer protects one person and strands another. You get to avoid the small discomfort of declining, and they get to hold a space open, keep the afternoon clear, maybe turn something else down. Vagueness is not kindness in that situation, it is a cost transfer, and the one paying is the person who believed you.

Say the real answer within the hour, even by text, even with no reason attached. A plain no now beats a maybe that turns into a no on Saturday morning. People trust a fast decline far more than a slow collapse.