Book by the end of this month and you can pick from four different perks when we book your next Celebrity cruise in Europe, the Caribbean, Asia or Australia (for 4 days or longer) sailing between September 2013 and April 2014. Choose from a classic beverage package for two, free tips, onboard credit of up to $300 or savings on your air worth up to $600. We can help you assess your most valuable option! In addition, the cruise line is “Solsticizing” its four Millennium Class ships, adding venues and on board experiences found on its five Solstice Class vessels. The four ships undergoing these transformations include Celebrity Constellation (originally renovated in 2010, but now adding more venues, renovated cabins and bathrooms and features), Celebrity Infinity, Celebrity Millennium and Celebrity Summit.