Reservations

Is access to the Plopsa parks included in my stay? Is dinner included in my stay? Is breakfast included in my stay? Is lunch included in my stay? Is there a minimum age for the main booker? I see that a Plopsa park is 'Sold out' during my stay. What does this mean? What is included in the price of my stay? How much is the tourist tax? Can I change or cancel my reservation?