There should be a brochure in your room that has the info. Here are the dates from the 2018 bounceback thread-
Jan 1-3, 7-11, 15-18, 21-25, 28 to Feb 1,
Feb 4-7, 11-15, 19-22, 25-Mar1,
Mar 4-8, Apr 3-5, 8-12, Apr 15 to May 24th , May 28 to Aug 30,
Sept 4-29
Dec 7-22, 2018
Cal ext 8844 from your room to see what is available.