Am I understanding that the par 3 with the tees on the ocean side of 17-Mile Drive is actually on the Dunes course?
Yes
One of the scariest tee shots I ever encountered. As I tend to draw, I had to start it waaaay right, aiming at nothing but ocean and the dam wind still carried it left of the green!
Opening heading away from the beach and into the forest/houses takes something away. The first 2 holes are repetitious playing in the same direction. The course doesn't get going until the 7th (although the 4th - like all the par 3's - is a gem). It also looks like they are addressing the drainage/wet soils issue of the inland holes from the pics.
Standing on #10 tee is a glorious vista, overlooking Spanish Bay's links to the right and the Dunes/Shore ahead and left. And what looks like a benign, downhill par 3 in photos is really like #7 at Pebble on steriods - straight into or with a right to left quartering headwind, it seems like a mile and just a little too much spin and Good Luck!
Highlight was running Bill Walsh (Legendary Standfor & San Fran 49er's coach - for those across the pond and down under) and his wife at the Halfway house. She was in her declining days and Bill said they just come out to sit and take in the scenery. Very moving.