To Stuttgart end of November?

Hello everyone,
I have a question that may be best addressed to "Fly without reservation" or Chris from atlanta, but I wanted to throw it out for anyone. I originally posted about a trip to Copenhagen, Denmark and Frankfurt Germany, but I never made it to Germany due to not having enough time. I would like to try again at the end of November, possibly the 24th - 29th, or 30th. Would it be a good decision to try this going standby on Delta flight 116 to Stuttgart out of ATL using an S3 priority? I ask because of Thanksgiving holiday and because delta is running special fares to Europe this Fall and Winter. Any info is greatly appreciated!
Thanks!