Everyones likes and dislikes are different. I personally like to watch, and occasionally participate, in the games(poolside, gameshow take-offs, bingo,ect). The shows are usually pretty good on board. And of course the casinos are open when the ship is not in port. There are usually galley tours& bridge tours. Some ships have skeet shooting off the back. Other ships have golf practice nets. There are always the spas for massages, and work out equiptment. There sometimes are aroebics or group exercise. One of MY personal favorite things to do is "people watch". There are so many different kinds of people. I have met some really lovely folks on cruise ships and still keep in touch with some.
I hope that you have a great cruise. You'll have as much fun as you allow yourself to. This is YOUR vacation. Have fun and enjoy! happy cruising!!!
One of my favorite things to do each day is have the Drink of the Day. I am not much of a "drinker", so it is great to try new concoctions. For days at port, either pick a half day tour in the morning and return for lunch then relax on board or take a walk into town a taxi to a beautiful beach or private 2-3 hr. taxi tour. The shows on ships usually are great. We don't gamble much but occasionaly leave a depost to the corporate debt! On our last cruise, we checked out a different lounge each day for music listening and our dancing pleasure. Spa treatments are something my husband really enjoys, so he books his appointments as soon as we board, even before going to lunch. Always book on a sea day or after 5p.m. so you don't miss any sailaway activities. Late seating is probably better unless you are traveling with kids or don't enjoy late night venues. Late seating allows for a little nap before dinner. You are not rushed from days at port to get ready for a 6 p.m. meal time.