BMW Questions? Ask a BMW Repair Expert for Answers.
I have enclosed the BMW battery draw steps in the link below which should help you isolate the problem.Copy and paste the link to your browser to open and view it.https://dl.dropboxusercontent.com/u/104923897/Battery%20draw%20Aug%2018.pdf
Run through the steps and see if you can find the draw. Chasing them can be a real pain in the rear but usually they can be found if you stay after it.
Okay , good luck on the hunt and also make sure you enjoy the vacation as well.