Up to 4x Miles and More miles.

double miles for the second stay
triple miles for the third stay
quadruple miles for the fourth stay or further stays within the promotional period

Register at

http://www.hiltonhhonors.com/vierfach

T&C

Participation in the promotion is only possible after you have registered at http://www.hiltonhhonors.com/vierfach;
This offer applies after successful registration for chargeable stays in participating hotels between 1 October and 31 December 2012;
Only stays that were booked after registration qualify you to receive Miles & More award miles;
Hilton HHonors members, who select ‘Fixed miles award’ in their profile, will receive the basic 500 Miles & More miles per stay. In addition members receive 500 Miles & More award miles for their second stay, 1,000 award miles for their third stay and 1,500 award miles for their fourth stay and any subsequent stays;
Customers must be Hilton HHonors members to receive award miles;
Hilton HHonors members must have selected ‘Points & Miles’ in their profile and also chosen Miles & More as their preferred airline partner;