Keep the camera, lenses, and assorted flashes in a sturdy case such as a Pelican case or Ammo box. Both of these are water proof containers and provide adequate protection. Take the strap off the camera. You really don't need it and it takes up space. Be aware of your surroundings.
Light can bounce or absorb depending on the color.
Here in the south, it absorbs more than reflects. Although it is not much of a problem around here, over exposure in light colored rooms can also occur. The auto thyristor should recycle from .5 to 11 seconds. This however, is not a bad thing since most shots require maximum output any way. Film is cheap.