I spoke with one of our servers on the Wonder, who was from Trinidad, about the jerk chicken on one night's menu during the WBPC cruise this year. As a mildly seasoned baked chicken, it was quite delicious, but there was nothing even remotely resembling jerk about it. He agreed and said it used to be at least moderately spicy and much closer in flavor to an authentic jerk seasoning, but too many people complained that it was too strong and sent the dish back for something their palates could handle better. So, a dish that was "inspired by" to begin with got even more watered down because passengers demanded it.
In other words, be glad the menu at Tiana's Place even manages to be "inspired by" Cajun cuisine, because if they actually tried putting authentic gumbo on the menu, it would soon be replaced by something even blander than what's there now.