Devil's Castle 

Here's a bit more approach beta: From the parking lot, walk through the campground on the main road. You'll pass a small gate on your right and a minute later you'll see a larger gate on the right. The main road goes left here over a bridge thing, but you want to go right through the gate on that road. This will take you through some houses. After the houses, the road will veer left and you'll see a great singletrack trail going straight. Go straight on this trail. After 15 minutes or so you'll pass by a cool looking cliff on your left and you'll be directly under the face. A broad, shallow, rocky, talus-filled gully leads to the base of the face from here. Follow the gully to the base of the routes. It takes me 45 minutes at a not-in-a-hurry pace.

Spoke with some guys who had just finished the raps off Black Streak. They reported that it was easy and not a problem. Problem is, you are rapping down the most popular route on the wall.
A good idea would be for more of the routes to get equipped with chains for raps so as to avoid traffic jams and lose rocks falling on those below.
Maybe think next time about bringing up one set of chains to donate to a belay for the benefit of everyone else.

Or consider walking off which is quick and easy.
Rappelling and pulling the rope = increased chance of knocking loose rocks down on yourself or people below.

Agreed. This ain't the Thumb, the 'convenience first' attitude will kill someone on the Castle. When I did Horns a few years ago I was belaying tucked in the mini alcove on top of P3 when I heard a loud thud and was showered with dirt. When I followed the next pitch I found a head-sized block embedded in the dirt 10' directly above the belay. Failed to mention to my partner that one of us came within feet of the Pearly Gates.
Spontaneous choss fall happens all the time on the castle. Pulling a rope through the death ledge will result in someone dying. The walk off sucks. A broken ankle sucks more. Brain splatter sucks most.

Consider donating chain to restrain ravenous bolters instead...

I don't think the walk off sucks. You have a good trail down to Cecret lake, It goes fast and it's quite scenic too.

Brian, do you rack up at the car? I've always dragged a pack up there and had to walk back down to the base of the lines. That walk-off sucks big times unless you're with Shaft and he's throwing a fit and threatening to call Ono every time he finds the remains of a bamboo stick...

I have kinda come to terms with the prevalence of the invasive species of alpine bamboo.

Need an impromptu axe to negotiate the slippery snowfield? Look for a sturdy specimen. Need walking sticks to recon the next killer line? Locate the longest mysteriously splintered 'boo sticks and stability reigns.

Plus chicks dig dudes that have rockfall scars AND haul out trash.

Reasonable to get back to the pack if you take the trail down before you get to the hike up to Pinchaloaf, uhh, Sugarloaf. Cut down the gully and then head to to the base. Keep the radar on, as, any wind and/or goats could nail you with a loose rock.

Not that bad.

When I'm up there, the climber going second carries a small pack. This is one of those times when it's better to be on the sharp end!