Gentle amusement park rises are permissible. However, rides that throw you around or make sudden rapid stops can be hazardous to the baby. I suggest that you enjoy your trip, but abide by the warnings posted on the rides—and make sure to take loads of photos of your children as they delight in the fun of Disney World.
Our parenting advice is given as suggestions only. We recommend you also consult your healthcare provider, and urge you to contact them immediately if your question is urgent or about a medical condition.