You already answered your own questions so I don't know why you're asking...
You said it and they also say it on their site - 2 weeks
Don't know what you find so hard about that.
You can use copyscape.com and set up google alerts to check for your work for as long as you want to continue checking it - it's not hard to do.
If your article is off-topic or badly written they won't accept it. (Would you pay for something that's badly written?).
Why don't you just ask them your questions yourself? Or even google for comments by other writers?