I cruised alone on the Majesty on October 1 - October 5 and had a great time. You will meet lots of people and have lots of fun. Don't worry about cruising alone. I did and had lots of fun.
I've mentioned this before on other threads, and I'll mention it here. The point is that you are on vacation and the point is to just relax and have fun!
2007 - Majesty of the Seas (Bahamas)
2009 - Enchantment of the Seas (Western Caribbean)
2010 - Freedom of the Seas (Western Caribbean)
2013 - Golden Princess (Alaska, roundtrip from Seattle)