Yes, my same friend (mentioned above) had booked a cabin at Kokee and envisioned driving down to the beach from there as it looked like a short drive on the map, but didn't realize it was just too curvy of a road for her. They cut short their cabin stay after a not so good trip up to the area, realizing the next time they drove down would be her last!
I think it is a great road, but I don't get car sick. :)
We are back to the individual person and what they are capable of handling. Most of us totally enjoy the drive up and down with no trepidations what so ever.
But, if car sickness is a big deal then that person might want to spend some pool time, or shopping , or whatever and not attempt it. The other of the group has a problem with percipitous hights....that will not be much of a problem driving, but what about the overlooks that gaze down into deep canyons.
Why subject the either of both of them to a condition that they feel uncomfortabl with, and not only that, ruin the outing for the others of their group who will be affected by what is happening with their friends.
Were it us, we could drop them off someplace that would be on their personal list to have some fun, and pick them up after our photo op and discovery of waimea canyon and the kalalau valley. \
For others, this is not like the road to hana, as others have mentioned, Waimea Canyon Road, really is no big deal, no drop offs, and is a pretty good road, with some turns. But for those afflicted with vertigo for the lookouts , or fear of heights , or motion sickness it could be a very big problem.
I do not handle heights well at all. In our second visit to Kauai in 1998, my wife and I drove up to the top of the canyon, and it was okay, though I couldn't get out of the car, much less get near the overlook itself, when we got to the top.
The drive down was absolutely horrific. I was white-knuckled all the way.
I will never be able to do Waimea again, unfortunately.
So while I can't speak to the matter of car sickness, I would advise the person who doesn't like overlooks to spend the day at Salt Pond or Kekaha.
Boy, agree completely with Denny. There's really no reason groups have to stick together 100% of the time. It does everyone well to split up now and then.
I drive when I think a road will get me car sick. Something about doing the driving prevents the carsickness... Just an idea.
On our honeymoon in 2009, I was absolutely fine with Waimea Canyon. Totally not affected! Loving life!
The next year, we went to Maui and I experienced the Road to Hell, err, I mean Hana, and Sunrise at Haleakala in the same trip. It ruined me and I was so sick the entire trip. (I had previously never been motion sick in my whole life!)
When we went back to Kauai in 2013, I was pretty antsy going to Waimea Canyon. I FELT sick, but it could have been psychological. That being said, I never want to do Waimea Canyon again - twice was enough. Too bad it's my husband's favorite spot.
I think it also depends which road you take to drive up and drive back down - there are two roads that can take you up to the Canyon and back down again. On the second trip, we took the first route - it's a little unmarked side street that takes you up.