Today is the day I will find out if I'm going Feb 6th. Waiting for my friend to let me know if she is going. I don't think my hubby would let me do another solo trip. (Although, I really wouldn't mind)
Solo trips can definitely be nice since you can do what you want whenever you want and not be restricted by others. You can also (if you'd like) see if an LVA Members' Meet is going on during the time that you'll be in town!
I have made well over 20 trips to Vegas and all but 3 have been solo. I find it the best way to travel. That way nothing gets in the way of gambling, except losing.
Solo is fine, but any trip is better with someone you are compatible with. Sis and I really enjoy our trips to LV since we don't see each other very often and we enjoy doing the same things.