What is the parks policy on waiting in lines for the rollercoasters as far as if someone leaves the line to go use the restrooms? Are they allowed back in their place in line or go to the end of the line???

Unless you have someone holding it for you, you can't do it. If you get caught skipping or get accused of skipping, you automatically get dismissed from the park and there will be no refunds. My best advice is to use the restroom before getting in line

I agree with both.

What Lady Mandinite said is exact and precise! I went before getting on any rides otherwise I had to hold it and that was not a pleasant feeling!