I have to disagree. What is usually "peak season" may not be accurate for when you go. I was there in October of 1998, and the flies were unbelievable. A friend had given me a fly hat - basically a wide- brimmed hat (for the sun) with netting hanging all around (for the flies). I really needed it. Other people had purchased just the netting which they wore under their own wide- brimmed hats. It doesn't take up much, if any, room, so why not go prepared?