I'm thinking of booking through Carvinal. It's about $300 cheaper. I thought about the singles line, but figured the people would still be on the ship anyway so it would be lively. I may still go that route if I can't find a compatible cruisemate. I'm also considering other cruises. You can reach me at summersun2011 at aol dot com if you'd like to chat more.
Just got off the Dream today, I would not want to go alone (by the way I did a roomshare ). That ship is huge! That being said, there are 2 pools (but kids love them) 5 jacuzzies, several nightclubs with various music, small bands at different locations, miles of foods from different nations etc. I'm older, but I would think going alone would actually be lonely as you get lost every 2 minutes. Having a familiar face to connect with is somewhat of a comfort. There will always be some differences, but roomshares can work out as long as there's some similarities to start with.