I bought the annual pass, and my daughter would like to go on the water taxi with her friends will she need an id?

As long as they can scan the pass via phone she should be ok..they do ask for ID to purchase alcohol

Please remember that a valid ID is required at the time of redemption for annual passes. Annual passes will not be honored if the name does not match the ID.

Yes, they ask for a ID, but a lot of times they don't.