I don't know how many times I emptied my canteen. I know it was less than the number of times I "died" in battle. The first thing I did after I geared up, was learn drill and musket manipulation. Afterward there was a parade in which both "armies" marched around the camp area.
And we resurrected to kill and wipe out the Confederates in the afternoon. At the peak of the day, when it didn't seem like it could get any hotter, some friends and I joined forces to drag a restored 1863 fire pump wagon and later got hosed down with it to cool off. All in all, I had fun, but I will never, ever, ever, complain about American WW2 uniforms.