certainty productions

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With over 21 years of corporate and non-profit event planning experience, we understand the multifaceted nature of project management and the joy of watching an idea come together without a hitch. 

Thomas Marriott is a seasoned Technical Director with a proven track record of successful collaboration within a matrixed environment. Over the years, Thomas has secured and sustained working relationships with prestigious organizations across several industries, including telecommunications, health, human services, leisure and hospitality, entertainment and media, and professional and business services. He served as Senior Production Technician for Qualcomm for nine years and the San Diego Museum of Art Technical Director for eight years. He most recently served as the Senior Production Manager at the San Diego Convention Center. Thomas donates his time and services to several charities. His passion is designing one-of-a-kind event experiences that raise money for San Diego's neighbors in need. He is a long-standing member of the Lemon Grove Historical Society and Lemon Grove Library Guild.  

Dorinda Miller, CMP, is an innovative, metrics-driven leader with a proven track record of high performance, service delivery, and fundraising excellence. She holds the Certified Meeting Professional (CMP) designation administered by the Convention Industry Council and served as Senior Event Planner for Qualcomm, facilitating 800+ marketing events annually. She is a Board Member of the San Diego Memorial Society and provides independent brand consulting, specializing in non-profit fundraisers.   Dorinda is a Disneyland enthusiast and avid Comic-Con supporter.

Together, (and for fun) Dorinda & Thomas operate Cup' o the Day, a "Pay it Forward" program dedicated to spreading love & happiness with each morning's cup of coffee.

If you are looking for a stress-free experience and honest partners for your event, let us handle the hard work with the help of our preferred partners to help elevate your experience. We have developed outstanding relationships with the most sought-after venues in San Diego and other top industry professionals. 

Please note that our events consist of return clients, and we accept new clients on a case-by-case basis.