Mary, no need to worry, you don't have to be an experienced Golfer, it is a fun event. I never golfed and my husband had very little experience and everybody had a good time and plenty of good laughs. There are players that are good, others are average and others are just learning, the experienced players help other players, again, it's all for fun.
The first night CR has a Meet and Greet with drinks and hors d'oeuvres for the players which is normally held in the Music Hall on Anthem. There they assign people to teams of four. Even though we've only played in the event once many years ago, we usually go to the Meet and Greet on the first night since as we have the Invite. We like to see the other players we've met over the years.
CR holds another event during the cruise and they give out some nice prizes for , e.g. the longest drive by a man and a woman, the best team score and other categories, the prizes are nice.
As far as purchasing another entry, previously it was only for the invited guest, don't know it things have changed. Nick and Barb will be on the same one in Oct., we like to go, but I can't commit at this time, maybe we'll see you and Rose onboard, if she's the friend you're talking about 🙂 you'll have a good time playing if you decide to book.