If you are going to use it then it is worth it. As you are in port every day I personally would not have used it much. However, you can have breakfast there and afternoon tea, free drinks fr 2 hours early evening and free internet access. It is a luxery, quiet space with personal service and it would be an excellent way of meeting people that is missing when you dont have allocated dining. On a transatlantic cruise it would really come into its own. It has a limited number allowed to book and is always booked up. Maybe that is a reccomendation !
Agree with everything said. we did have it for three weeks on a transatlantic and it made the cruise for us. seemed like a lot of money at the time, but it seemed to upgrade the cruise for us.
You are only allowed to book the club lounge if you have booked a suite.