Very knowledgeable when it comes to Celiac and many other food allergies. The hotel even offers an allergy form when you check in to ensure that there is no cross contamination. Food is delicious, but pricey.
This review is specifically for "Ko" at the Fairmont Kea Lani. Our waitress was very Celiac/GF aware, though admittedly, part of that was due to her having 3 family members with Celiac. She was able to point out a number of options on the menu which were GF, and checked with the chef on anything which we or she thought might be questionable. Our food was very good, and the service overall attentive. It wasn't my absolute favorite meal on Maui, so I might give it 4.5 stars if I could, but we really had no complaints.
Excellent service, delicious/ amazing food, and there was understanding about gluten sensitivity. Menu has some creative options, this dinner experience was a highlight of our week.