Hi Marianne,
Welcome to the Disney Parks Moms Panel and thanks for sending us your question. August is a great time to visit Walt Disney World Resort, you are going to have a fantastic time!
Moana is currently on a voyage somewhere out on the ocean. Given her love of adventure and her voyager roots, she can't stay in one place for very long and is not currently meeting guests at Walt Disney World Resort, Since August is still a long way away, there is still hope that she may return prior to your visit. I would recommend checking the
Disney Parks Blog regularly, as information regarding new character appearances will be posted there first.
Although she isn't currently at Walt Disney World Resort, Moana does make an appearance in the new Fireworks Showcase
Happily Ever After at Magic Kingdom Park. One of the projection scenes is dedicated to Moana and friends. There is also a large selection of Moana merchandise located at many of the retail shops throughout Walt Disney World Resort.
I hope that helps, Marianne. Please let us know if you have any other questions, we are always happy to help.
Stephanie