Roxanne,
There is a special going to PPT on several of the cruises. I calculated the fares and I got free air but they've changed the structure and it was really only a small variance to the total.
You may want to look on the
www.rssc.com for the specials for the May 21st cruise. Many of us here are going that sailing and we've nicknames it "PIP" for Party in Polynesia