Ok - if it was really good first time around then its not the juice. If it tastes good when you get it then I wouldn't worry about steeping it. Some juice definitely needs steeping. Some people have sometimes complained of a "metallicy" taste in their juice that went away after steeping it, but it doesn't seem to be a common problem.
Getting that taste from an atty issue is more common.
It's going to be great when your stuff arrives and you can enjoy that mocha java - I love that flavor myself.