Le Club Accorhotels has a new triple topbonus miles promotion for airberlin’s frequent fliers for stays between September 23 and December 31, 2013, that are booked by November 30.
You need to enable direct conversion of Le Club Accorhotels points to airlines miles (read how here) and have airberlin chosen as the partner airline. Then points from each of your stay are automatically converted to airberlin miles and deposited to your account.
There is no need to register for this promotion but you can access Accor’s web page for it here.
Airberlin continues to have number of promotions for their Topbonus miles. Whether you should collect miles or points for your Accor stays, depends on your stay pattern.