They are doing nothing more than the chef or host at any restaurant does -- stop by the table and make sure everything is going well. Our experience in Luminae is that this happens quite often.
Some people, myself included, like pork and beans, pasta, rice and bologna and eat them occasionally and find nothing wrong with that. I am glad that I am not a food and beverage manager that is trying to please 2000-3000 guest from all over the world at breakfast, lunch, and dinner every day and night. No matter what they do not everyone's preferences can be catered to.