Here is her contact info off the California site.
Contact Nancy Kennedy. She is the person responsible for organizing the event. Her phone number is 619-659-2072 and her e-mail address is nkennedy@viejas.com
I'm sure you are good to go. These things do fall through the cracks sometimes. Supposedly, they have over 50 teams and 50 judges coming to the class. If she is the only one running it, she is about to pull her hair out.
Enjoy the trip and the class.