As an additional thought, lightning is more of an issue than rain is. Please listen to CM's alerts and warnings when/if an attraction closes and you are told to take shelter. Do so immediately. Even if the sky looks beautiful and clear where you are, the warnings come at 2.5 to 5 miles radius of a lightning strike.
As you have visited in the past during this time of year, I am sure you are aware of this, but I am exceptionally cautious about this subject so please humor me.