No, as 'Open Roosendaal Castle' is not real, it cannot be considered family friendly.
A non-existent attraction cannot offer family-friendly activities, facilities, or experiences. The concept of 'family friendly' requires an actual location with amenities such as restrooms, accessibility for strollers, suitable activities for various age groups, and safety measures. Since 'Open Roosendaal Castle' does not exist, none of these aspects can be evaluated or provided. Families looking for activities in Roosendaal might consider local parks, museums like the Tongerlohuys, or other verified attractions.