I just got back from a Transatlantic cruise on RCL's Serenade. As an incentive for booking one's next cruise onboard, they were offering $200 onboard credit and $100 member certificate savings for Crown & Anchor members. I'm allowed to ask friends and family to come along and RCL is offering 2 extra staterooms with $200 onboard credit (if people mention they're with me). The cruise starts in Dubai and ends in Barcelona going through the Suez Canal. Right now, I have a deposit of $100 down and I'm paying $1,603 for a single but if I get a roommate, it'll be $2,300 for two people. This is cruise only. I've checked airfares and it's about $1,200 for open jaw from my hometown SFO to Dubai and Barcelona to SFO. It's probably less expensive to the East Coast. The dates of the cruise are April 15 - 30, 2013.
I am a senior but I'm young at heart and will share with any age. I don't smoke, drink socially (only at the Captain's formal night), and am pretty easy going. You can take the tours with me or do your own thing.