Hello Amanda! Welcome to the Disney Parks Moms Panel.
My wife and I decided to surprise our 2 children with a visit to Walt Disney World Resort on the day we left for the airport with a call from Mickey Mouse asking them if they could come down. My kids were excited to speak with Mickey Mouse on the phone and ecstatic when it finally dawned on them that it was really happening.
Walt Disney World Resort does not provide the experience of a phone call from Mickey Mouse directly, however there are several third-party websites that offer voice-over services that specialize in these requests. This is the route we took for our experience. Be wary when using third-party vendors. I recommend finding a website that focuses on providing performers a forum to provide these type of services.
An experience affiliated with Disney that builds anticipation for your Walt Disney World Resort vacation and includes a "Character Call" as a part of several unboxing experiences is the
Countdown to Fun package offered on the Disney Store site or by using the
Disney Store App on any mobile device. Not only will your daughter receive a "Character Call" but the 6 boxes included in the Countdown to Fun package help create a fun scavenger hunt that introduces your child to all of the experiences awaiting them at Walt Disney World Resort.
Hopefully your daughter gets to hear Mickey say "See Ya Real Soon!" knowing that she really will be seeing him soon during her first Walt Disney World Resort vacation!
~Todd