Please be aware that children under 1m in height do not need entry (they do not pay and can ride in family-type attractions, always accompanied by an adult). Tickets for Parque de Atracciones de Madrid allows unlimited use of all the attractions, except "The Walking Dead" attraction.
The Amusement Park is located in the country house which is accessed by the Carretera de Extremadura (N-V) or exit M-30 towards Badajoz exit Parque de Atracciones / Casa de Campo if you acces by car. The parking is completely free, both for cars and for coaches.
If you want to arrive by public transportation: Metro (Batan station - line 10) exit to Amusement Park, leaves you 50 meters from the Park. Buses: Line 33 Príncipe Pio - Casa de Campo. Line 65 Benavente - Great Captain.