Even if it's at the front of the park it's a great idea.
We pack the locker with 6 bottles of water and coats (we always go in Dec).
Maybe swap out the camera once or twice (when getting a reload of water).
Since it's just me and the wife, it's really not some big trek to get our stuff....
Plus, at the end of the day when you return your key, DISNEY GIVES *YOU* money!! (just your 2 dollar deposit, but still, it's an interesting exchange esp. when you point out to the CM that it's the first time it's happened all day).
Chris
61 more days