What's the best cruise line for a single woman who wants to travel alone but still have fun?

If you're single, you should go on a cruise with me.

Carnival is known as the fun ship. There are lots of parties, gambling and drinking. It would probably be a good choice if you are single and want to have fun. Royal Caribbean may also be something to look into. It costs a little more than Carnival, but I feel the overall quality is better. I think you will still have lots of fun, but there will be a little bit less partying. You will also see fewer families, because Carnival appeals more to younger families with kids. The rooms are a little nicer and the food is better.

I would check out their websites to see what appeals to you more. Ships, ports, rooms, etc. They are both great, but I prefer RCL over Carnival, but I'm not in to the whole party scene as much as others.

Hope this helps