The only thing worse than spending hours looking for the best location,unpacking the car and arguing about where to put the travel blanket(don't even think about beautifully clean white tablecloths you will be trying to get rid of the grass stains for ages) is realizing that there is a cow in the same field as you! The next thing to remember is never to take fizzy drinks on a picnic. If you have never run like the wind to escape a swarm of angry, sugar-starved wasps,you probably don't understand the logic behind this, but take it from someone who knows. It may sound funny to you, but amusing when this happened to me