My mom asked last night if I was concerned. I said when I go to grocery store we could get it or any number of things. That's where DD caught scarlet fever at 4 and DS16 caught the chicken pox at 2. Just keep clean hands, try not to touch to many public surfaces and lots of hand washing; and for the time being you should not shake hands, hugs, or other PSA. (Be careful w/the hand sanitizer--not to over use**DD is a biology major and they were warned to try and not kill too many "good" bacteria.) and if you show any symptoms (esp. the little ones) go see the doctor, don't ride it out.
Just to eleborate on how things are spread: one of the tots I watch was dropped off Monday vomiting (had her picked up early), brought her back yesterday w. diarreha. So, I'm sure the other three of us is just a time bomb waiting, I have been disinfecting constantly.
Good luck! calm down and enjoy your Disney experience!!!!!