"Very foggy" seems like a tough one.
The only time I have trouble harvesting is when I've made a bed too wide. For me that's around 2 feet wide, if I only have access to one side. So I'm happiest when I make my beds three feet wide, or four at most when access is easy from both sides.
Is reaching around things the problem? Maybe planting the4 tallest things in the center or back of a bed, and low things at the front would help. But if you have part shade and lots of fog, you nv eer want a tall anything casting shadows on short anythings!
I also don't bend well or squat easily, so I like a raised bed PLUS a sunken path between the beds. If you're nimble, you might get by with some kind of easy access into the beds, like sunken cinder blocks to stand on without compressing the soil.
I might try to make more beds, long narrow beds, with sunken walkways between them. Maybe a steppingstone every 10-15 feet in a long bed so you can step over it wiothout wlaking around or compressing the soil.
Throwing the topsoil from the walkways onto the beds makes the good soil deeper where the plants are. Even a few2 inches helps, and the walls could be a single 8" or 12" board, or concrete paving stones.
That also gives you great drainage, but your soil looks well drained.
You have a few tall containers: it seems as if they would be easy to reach even if surrounded by low plants like Bok Choy.
P.S. They look like they would enjoy some mulch, like bark chunks or wood chips. Do you add much compost?
P.P.S. I'll be busy this weekend and probably offline from now until Monday, hence slow to respond.
Enjoy, post photo! 
