This cache would be best attempted during daylight due to the closeness of houses, even though its on parkland.
Ive always thought that some aspects of caching are like the secret world of spy vs spy!
Cache is a micro about 5cms square, contains items which may be transferred to other Operatives, some may contain hidden microdots, encoded messages (made in China is common, you will need cypher codes for these) and some times coins of immense value (useful for paying bribes and ransoms etc).
TB's--(Terrorist movement Blueprints) will be in here from time to time, these also have missions to complete, Agency's to inform etc.