Hey there, Anna!
Welcome to the Disney Parks Moms Panel, and thanks for asking this wonderful question. It sounds like you and your little one are going to make some magical memories together at the Happiest Place on Earth!
Currently, there is not a guaranteed Princess escort experience with any package at the
Bibbidi Bobbidi Boutique. I know this is something that some Guests have experienced in the past, so I'm sorry that it is no longer offered. Castle Packages do come with a Disney PhotoPass keepsake portrait series, though, to help you capture your child's magical head-to-toe transformation.
If you are looking for an intimate and memorable experience with Princesses at the Disneyland Resort, I highly recommend the brand-new
Disney Princess Breakfast Adventures at Disney's Grand Californian Hotel & Spa. This unforgettable Character dining experience not only serves up a delectable spread of some of the best cuisine on property, but offers Character interactions unlike anything else in the parks. This breakfast also includes some gifts and keepsakes for little princes and princesses. Kids will make memories that will last a lifetime, and parents will enjoy the amazing ambiance and creative dishes at Napa Rose.
Don't forget you can also meet multiple Princesses in the Royal Hall of Fantasyland in Disneyland Park, and see some perform fairy tale stories at the Royal Theatre. Keep an eye on the Disneyland app for Character locations throughout both Disneyland Park and Disney California Adventure Park so you don't miss meeting your favorite Princesses and Characters.
I hope this helps, and have a magical day!
-Jennifer