Which of the following is NOT a term related to travel organization in Spanish?

The term that stands out as not being directly related to travel organization is "Tarjeta de pago." This phrase translates to "payment card," which generally refers to a financial tool used for making purchases rather than a specific element of organizing travel.

In contrast, the other terms directly pertain to different aspects of travel arrangements. "Organización de excursiones" involves the planning of trips or excursions, "Seguro de viaje" refers to travel insurance, a critical aspect of safeguarding travelers against unforeseen circumstances, and "Guía de viaje" means travel guide, which typically provides important information and advice about travels. Thus, "Tarjeta de pago" deviates from the theme of travel organization, focusing instead on a payment mechanism.