I am going to disneyworld and I have a keloid scar in my achilles tendon. What should I do?

My whole family and my brother law and my sister's boyfriend are coming in Disney world. My mom said I have to wear my swim suit. I had surgery in my achilles tendon. It leaved a keloid scar in my right foot. I dont want people to talk about my scar. Also, I dont want them to be disgusted. I dont want to be embarassed. What should I do?