The halibut sounds perfect! And yes, make sure you specify NO BUTTER on the steamed veggies. Maybe even ask if you can get a small plain salad with cucumbers and tomato (remember you CAN have tomato, 1 cup twice a week) with no dressing since you are skipping the potatoes too. I always tell my server Dairy-free and Gluten-Free, it keeps them from accidentally throwing cheese or butter on something