We use USA Transfers. There is a link on the main forum page. $55 for up to 3, if you can get more than that the rate gets better per person. Actually it looks like it autolinks in this post.
The cruise for the 11th is now open for deposits, here's the link to details of the day and the list of who's coming: http://www.cancuncare.com/forum/tem...oobs-cruise-fri-11th-october-provisional.html