Hi Emily!
Welcome back! I'm so glad that the Disney Parks Moms Panel has been able to help you plan your upcoming trip!
A high chair should be available in your villa at
Disney's Bay Lake Tower. They are usually stored in the closet, along with a pack 'n play. If for some reason there is not a high chair, simply call housekeeping and they will bring one to your room.
We find eating breakfast in the room works very well. Not only is it a good value, but it allows us to spend more of the morning hours in the parks, when we feel it is less crowded. We bring some easy breakfast items from home, like oatmeal packets, but then we also use a grocery delivery service to have items such as fresh milk and juice delivered to us. We have had a good experience using Garden Grocer.
I hope this information is helpful, and feel free to send any additional questions we can help you with. Wishing you a magical trip planning experience!
Kate