We have traveled to WDW a lot in the last few years, and EVERYTIME my son (a young adult) gets sick--(sore throat, head cold) after about the 3rd-4th day. It never fails. Well, before our last trip I watched a TV news program (60 minutes, 48 hrs, dateline kind of show) about "hidden germs", like in the movie theaters, on shopping carts, etc. and they mentioned the metal bars in the queue areas that EVERYONE touches at amusement parks. So I brought with me one of those bottles of hand wash antiseptic--the kind you don't need to rinse off. (They come in mini sizes that fit easily into your pocketbook. I made sure we used it before we ate any food with our hands (popcorn, cotton candy, chips, etc. --any foods we ate where we didn't have the opportunity to get to a sink first-- and we used it all the time. For the first time ever, my son DID NOT GET SICK. I truly believe this did it for him. So don't ruin your vacation or that of your family--clean your hands before eating anything, and I bet you don't get sick either!