Dole is a timing problem rather than a quality problem.
Before ten. Car park half empty, no coaches yet, Dole Whip in two minutes, maze quiet. This is the version of Dole Plantation people recommend.
Ten to two. Tour coaches stack up, the shop is shoulder to shoulder, the queue for soft-serve is long enough to reconsider, and the maze is full of people photographing each other at the checkpoints. This is the version people complain about.
Late afternoon. It thins again, but you are now driving to the North Shore at the wrong end of the day and will hit the Haleʻiwa bottleneck.
The strategic point is bigger than Dole itself. If you are coming from Waikīkī for a North Shore day, the drive up the H-2 puts you at Wahiawā around an hour in, and stopping here for ninety minutes means arriving at Laniākea and Waimea at the worst part of the day, when their small lots are already full. The parking constraint on this coast is real and it is decided before eleven.
The clean plan: leave Waikīkī early, blow past Dole, do the coast, and stop at Dole on the way home in the afternoon if you still want to. The other clean plan: be at Dole when it opens, be gone by ten, be at Waimea by half past.