I would take your TA's opinion with a grain of salt. Besides the subjectivity of food opinions your TA is, as you note, a "huge Celebrity fan". So I wouldn't expect to hear stellar HAL reviews, especially as you are also partial to Celebrity. The client is always right
We just finished a Eurodam cruise and the three MDR dinners we had were exceptional. I usually am less than enthusiastic with the MDR but in this case it was great, especially the Culinary Council dinner
There other minor issues with the cruise but nothing which dampened the experience, It didn't hurt having great weather in AK which always makes it a better cruise.