Starwood Preferred Guest members can earn up to 18,000 bonus points through April 15, 2013 with the “Power Up” promotion. Register by Feb. 28, 2013 at http://www.spg.com/powerup and earn 2,000 bonus points for every four eligible nights, up to 8,000 bonus points after staying 16 nights. Earn an additional 10,000 bonus points after completing 20 nights, for a maximum bonus of 18,000 bonus points. Stays at eligible rates at all SPG-participating hotels and resorts qualify for the promotion. Nights do not need to be consecutive.