Hey there, Jennifer!
Walt Disney World is so great to work with when it comes to dietary restrictions. They really do take the needs of every Guest under consideration. I think you'll be happy to know that you can customize almost any of your meals to suit your needs while at Walt Disney World. When you arrive at any sit-down restaurant, family-style dining or not, ask your server if you can speak to the Chef before you order. They will come out and talk to you and your husband about his dietary restrictions and together come up with a meal that is best for you guys. At all-you-care-to-enjoy meals this might mean a big platter of eggs and bacon for the table for breakfast with some low-carb fruit options and then a small plate of Mickey waffles on the side for you for breakfast or a big bowl of salad and meat and veggies for a dinner option. I think you'll be pleasantly surprised with what you'll receive.
It's also really easy to eat low-carb all day throughout the Walt Disney World Theme Parks. Each quick service location and food kiosk has a nutrition binder on hand. If you have any questions about what exactly is in each dish, you can take a look at the binder and decide what is best for you guys. Also, quick-service restaurants are great about customization. Want a burger but no bun with veggies instead of fries? That won't be a problem. At snack kiosks, you'll also find options like veggies and dip, babybel cheeses, and dill pickles (which are my favorite) that are great low-carb options.
I was taking a look at some different menus and saw some great low-carb options you might want to check out.
- Pecos Bill Tall Tale Inn and Cafe at Magic Kingdom Park - The food here is texmex and really delicious. I personally love the fajitas. Order them without rice and beans and you have a great low-carb option that's really filling.
- Flame Tree Barbecue at Disney's Animal Kingdom - This restaurant has a great list of smoked meats that you'll be able to smell anytime you are near Discovery Island where it's located. I can attest that all of the food is delicious. A great option for you guys would be the slow-smoked chicken and then exchange the sides out for something more low-carb friendly.
- PizzeRizzo at Disney's Hollywood Studios - Now I know a pizza place might be the last restaurant you would think to go, but they actually have some really great salads here. The antipasto salad is a nice big portion of ham, salami, pepperoni, olives, mozzarella, tomatoes, peppers and onion with romaine and house vinaigrette. It's filling and meets your dietary needs. They also have smaller Ceasar side salads and a meatball sub that I think you could customize and get with no bun for something warm and a little more substantial if you weren't in the mood for salads
- Epcot - this park is a little bit trickier because there are a lot of food kiosks because of various festivals and the menus do change up quite a bit. This is the park that the nutrition binder at each kiosk is really going to come in handy. But a good option to consider is Sunshine Seasons in Future World. There is an oak-grilled salmon on the menu that I've had before that is really good. Pair that with a salad and it's another great option.
I hope this has given you a few ideas on how to eat within your dietary needs on your vacation, Jennifer. If you have any other questions, please come back and ask.