Sorry, but nope, not accepting that. Places like Hawaii and Florida may have them as common to the area but it is unacceptable for a hospitality resort to not ensure they are kept out of dwelling units, that means their pest control isn't working. I have stayed at Aulani and have stayed at Hyatt Place Waikiki Beach as a flight attendant and never saw a single roach.
I have traveled to Hawaii more times than I can count staying at various hotels as a flight attendant from Sheraton Kauai in Lihue, to Maui Coast and Royal Lahaina and Outrigger Kona Resort & Spa and NEVER saw roaches at any of these places! No way I'm paying thousands of dollars for an annual vacation and it comes infested!
I agree that hotels, etc. should not be infested with any kind of bugs, especially cockroaches. And I think if you see them running around, that's evidence that their pest control isn't working, as you say. I just meant that they are endemic to the islands and that 100% control probably isn't possible. They can fly in from the lanai or whatever, or you may find a dead one (evidence, perhaps, that the pest control IS working.) But they should not be living in the units, or the walls, etc. And if they get a foothold they can be tough to eradicate, so prevention is important.
My original reply was meant to convey the idea that it's probably impossible to guarantee that you will never see a cockroach in Hawaii, not that infestation was acceptable. Sorry I didn't do a good job of making that clear. There's a difference between "a cockroach came in from outside" and "my room is infested."
There are plenty of people who will decide "I'm outta here" after seeing one bug, and any resort operator who doesn't understand that is going to lose a significant number of customers. But it's a constant challenge.
(I once spent the night in my rental car in Florida after checking into a hotel where cockroaches scattered when I turned on the light in the room. Who could sleep there?)