A geographical area of near-complete safety; and sometimes, as a result, very little "real" adventure- much like the gameplay in the classic board-game Candyland.
This term originated from Ultima Online, a massively-multiplayer online role playing game (MMORPG, like World of Warcraft, etc), the term "Candyland" was given to a region "Trammel" where the player could not be killed by another player. Typically it was intended in a derogatory manner by aggressive players ("Player Killers" aka PK's) but could also be used in a neutral or positive tone.
The magic feel good fairy that lives under your desk and appears randomly and has a great fondness of lollipops. ;) And being the Queen, she has a particularly good technique.
"Oh my god, today was such a great day at work because the Queen of Candyland paid me a visit that I won't forget."