Whatever your situation, doing all that you can to be fit, healthy and independent can only be a good thing. If a particular sport or activity is impossible, try and enjoy what aspects of it you can regardless, and if it’s a practical task, try and adapt where appropriate to maximise independence.
If you have a disability, it is undoubtably a significant factor in shaping your personality and life experiences, regardless of whether you think of yourself as “disabled”. Sell yourself in all your glory. Then when you get the job, you know you are right for the company. And more importantly the company is right for you.
Children are the only people that actually say what they think. When they demonstrate their refreshingly inquisitive nature by asking questions about the unusual things they see, it should be an opportunity to educate and inform them, not silence or punish, regardless of how embarrassed the parent may initially feel!