I can't believe the reply by that company. They obviously don't care about their customers and eventually it will come back to them. Regardless of whether or not you only see/serve people once because they are on vacation, you should still provide good service.
OP: On the website for the company there is a link to "Click here to see what our guests are saying about us" and it links to a destination wedding forum. Perhaps you should post your experience there as well. Sure they can just remove the link from the website, but hopefully more people will see it.