The useful first step at Miami International Airport is to treat the airport's own transportation page as the source of truth. After baggage claim, follow current rental-car signs and keep the destination---MIA Mover to the Rental Car Center---in view rather than navigating to an unrelated public address.
MIA travelers should follow airport signs for the MIA Mover and Rental Car Center after baggage claim. Verify the current terminal connection and return path with Miami International Airport before travel because airport operating conditions can change.
Before leaving the facility, confirm the agency's current hours, identification and payment requirements, vehicle notes, and return instructions. Photograph the vehicle condition and keep the official airport and agency pages available for the trip home.