I always boost myself with a bunch of those EmergenC vitamin packs in water bottles for a few days before and the drive down. I am much more sanitary hand gel crazy before meals now! Its either get up and find a restroom to wash hands or use the gel. It worked this last time twice! I think a big reason we get sick at the parks is not wanting to pay a buncha money for water bottles but I've learned that being well for the trip is better than being sick. Dehydration is a MAJOR way to get sick!
Its not a guarantee but every lil bit helps!
Also I did that before a weekend to Indiana. It must not have been enough to keep the "people soup" at bay at the water park I was at. I woke up with a sore on my leg (you know how comfortable walking half wet half dry is and I was not prepared because we went at the last minute) and it came and went for a month. 3 weeks ago we had to cut it out. I got a deep staph infection from a water park. Great. (It manifested immediately the next day ferociously and then I was able to fight it off some of the time but we are 99% sure it came from the water park due to the next morning coming out like a major infection!)
Now Im not in a hurry to go to any water parks. I'm still not healed from this thing getting cut out! It reminds me of that whenever I mow the yard or try to walk the dogs.
I HATE bugs!!!