I've had a annual pass to Disneyland for years, so i can help a little with the avail food choices. There is a place called Bangel BBQ--- pretty much you can get meat and veggie skewers. I feel like that's the safest bet when I'm there and watching carbs. I am due to be sleeved in Feb, so I don't know how your energy level will be by then- because honestly Disneyland is quite exhausting especially in the hitter months. However, food wise I'd think as long as you have some protein drinks on hand or protein powder to add to avail drinks you will be fine. There are fruit carts, yogurt, and even restaurants that have mashed potatoes and yummy low carb salads. Just depends on what you can tolerate by then.