This park is very close to where I grew up, 'the park' as myself and my brothers used to call it was where we spent allot of our weekday afternoons and weekends.
These days the park is looking a bit worse for wear, since the local high school was built the park and it's surrounds has been heavily affected by vandalism. The park has been repaired on a few occasions and is still a nice place to take kids for a play on the equipment, kick around a football or fly a kite.
The ACT Government's Territory and municipal services website lists the public playgrounds due to be upgraded in the current financial year. At this point 'the park' is not listed as a priority. Hopefully one day it will be as I would like to take my children here to see it as it's meant to be.
The cache itself is a short walk away from the play equipment to avoid being muggled.