Related to nearby cache "Bob's Your Uncle", "Fanny's Your Aunt" is more like a true P & G (Park & Grab).
There's no bushwhacking involved, no ticks, no poisonous plants, no puzzles, no stages. It's very simple: park the car, find the cache, swap some swag (or not), sign the log, Bob's your Uncle and Fanny's your Aunt.
"Bob's your uncle and Fanny's your aunt" means, "...it's as easy as that!"