The cache is hung on the back fence facing the alley. There is no need to enter the yard although, if you happen to catch Mum or Dad in the yard, I'm sure they wouldn't mind giving a tour. I know they wouldn't mind some help when it comes time to pick the apples, as well.
This is a child friendly cache with little bits of swag especially for them however, make sure TOTT are brought (for example, there is no writing tool provided).