You've found a great forum here for getting back into the "swing" of things. This is a great group, with alot of good information.
As for cruises, we can definitely recommend this group:
Adult and lifestyle couples conventions and erotic travel adventures
If you're looking for something a little closer to home, but is still a nice getaway, look here:
Pleasure Grove Swinger Lifestyle Resort
Good luck and have fun!
Mrs. D