I think Monday morning is probably when they have to deal with their "brethren" who weren't spiritual enough when they were "taking up" the rattlesnakes on Sunday.
The two most reliable early manuscripts do not have Mark 16:9-20. This is where you will find the reference to handling snakes(16:18). This possible addition to scripture by some dark ages monk, which was canonized by your church, is probably spurious.
You will find that most Bible professing christians, including yourselves, do not pick up snakes with their hands as part of their worship services. It is sad when someone who has legitimate disagreement with your theology is characterized as someone who would belong to such a cult. This is one reason I do not respond to many posts. I just don't want to get down and dirty......although I do read most of what you folks have to say.
I am not a protestant and I do not observe Sunday worship.