I was just there with first-timer friends. We spent the bulk of our time on Maui, but had 3.5 days with them on Oahu. They were going to take the Pearl Harbor tour that also included circle-island, which included the Dole Plantation.
When we were finalizing plans, we decided to do a similar tour with them in our car

, but to have more time to explore on the North Shore, we bypassed the Dole Planation.
It's a pretty big tourist trap - lots of buses stop there - and all that's really there are expensive trinkits and the corn maze.
So you be the judge