1st Time Visiting with Family

Hi Houston, I'm coming down for the 1st time with my wife and 20 month toddler and also bringing my 70yo parents to visit. Since we are of all age ranges, wondering what are some must do things or places to eat accommodating all of us. We're from NYC and aren't into museums that much (although will be visiting the children's museum) or hiking since parents have mobility issues. Thinking of bringing them to rodeo but trying to find 5 tickets on stubhub for good seats seems impossible. We will be going from March 16 to March 20th. Thanks in advance!