So Sorry, hope you are all better soon, but at least it was before you left. We went last year in January and the first day there as we walked out of the gates DD said her throat hurt, I figured it was a cold, what followed was four days of fevers, sore throats et al. When we got home we were both so sick finally went to the doctor and discovered we had streph. So as disappointing as it is, at least it wasn't while you were there.
Reschedule ASAP, even if it is a ways away, it will help.