The first time my husband and I went to WDW I was up all night the second night in the bathroom...not really a virus, just over indulgence.
The third time my son was with us (who was 22 months at the time) and he had the "poopies" for a couple of days.
I think a lot of the stomach irritations are largely due to how our diet changes when traveling.
We often eat at odd times, or too late in the evening.
We eat fast foods, convenience foods, prepared foods and less fresh fruits and veggies. We get to our PS's and oh boy!!!
So before we go this next fall I think my children and I will dine out at McD's all week, eat food from the convenience store like hot dogs that have been in that heat thingy for hours, and soda just to condition our digestive tract and we should sail through our 5 days at WDW with no problem, right???
Seriously, we don't even like McD's that much.
I think the idea of using Purell often and constant hand washing is a great idea...at all times. And I am going to stop at the grocery store when we get to Orlando to stock up on fresh veggies we can munch on, fruits with fiber...and Metamucil and Immodium just in case!