Minnie Van transfers can be added to Walt Disney World Resort packages up to six months in advance.
Guests can arrange a one-way or round-trip booking by calling Disney, or by touching base with their travel agent. The fee for Minnie Van airport transportation is $150 each way (gratuity not included). Minnie Vans can include up to 3 complimentary child seats if they are needed.
Disney’s Magical Express remains a complimentary airport shuttle service that includes luggage delivery and airline check-in for guests staying on Walt Disney World property.
Source: Walt Disney World