About Addendum
Experience that turns destination potential into strategic value.
Addendum is a boutique tourism advisory and market representation company helping destinations strengthen their positioning, international presence and commercial relationships.
Founded and led by tourism strategist Vivi Gialou, Addendum combines senior-level thinking, market intelligence and hands-on execution.
Discuss Your Destination
The Addendum Philosophy
Adding more than visibility.
Adding destination value.
Strategy should never live separately from execution. Every assignment begins with clarity and moves toward purposeful action.
Successful destination marketing requires more than campaigns and exposure.
It requires clarity of positioning, a deep understanding of markets, meaningful industry relationships and the ability to translate strategy into action.
Addendum was created to provide destinations with the strategic perspective and practical support that often sit between ambition and execution. We work closely with destination organizations, public authorities and tourism brands to build stronger market presence, valuable partnerships and long-term growth.
Strategic clarity
Focused direction shaped around the destination’s genuine priorities and potential.
Market relevance
Positioning and representation informed by international market realities.
Hands-on delivery
Senior-level involvement from initial thinking through execution and follow-up.
Founder & Managing Director
Vivi Gialou
View LinkedIn Profile ↗Tourism Strategy · International Representation · Destination Marketing
Vivi Gialou is a tourism marketing and destination development professional with more than 20 years of experience supporting destinations, tourism boards, regional authorities and tourism businesses across Europe and international markets.
Throughout her career, she has represented destinations at leading international travel trade shows, B2B workshops and tourism industry events, helping organizations build meaningful partnerships, increase visibility and strengthen their position in competitive markets.
Her experience combines destination marketing, strategic planning, trade relations, tourism promotion and market development, providing a practical understanding of how destinations can create sustainable growth through stronger market presence and professional representation.
“Strong destinations are built through meaningful relationships, strategic partnerships and consistent market presence.”
Experience in Action
Strategy, representation and relationships.
From international stages to focused buyer meetings, Addendum combines visibility with purposeful market engagement.
International visibility
WTM London · Professional speaking
B2B engagement
Buyer meetings · Partnerships
Industry leadership
Philoxenia · Destination insight
Trusted by Destinations & Tourism Organizations
Selected Clients
Addendum is trusted by destinations, tourism organizations and public authorities seeking strategic direction, effective communication and stronger market presence.
Senior attention, specialist capacity and a flexible model shaped around each destination.
Collaborative Expertise
Our Partners
Addendum collaborates with trusted partners, bringing complementary knowledge and capabilities to selected projects.
Let’s add value to your destination.
Strategic direction. International market access. Senior-level delivery.