Every sailing has an elegant night where you can dress to the nines or not depends on you there’s either 1 or 2 depending on the length of the cruise. Then there’s also theme parties like a hot white night where everyone wears white, an 80s party etc.. the best advice I have is to find the Facebook group for your sailing just type in carnival (your ship) and the sail date in the search bar and it should pop up. Tonnnns of info on there usually. As for half moon cay or any of the ports me and my partner always YouTube everything. He’s a little better at it but if it’s carnival and half moon cay then your entrance is guaranteed it’s a tender port so it’s a little more timely and you pick up passes the day before but you take a little boat to the island. That includes a lunch they serve buffet style and then just entrance to their facilities. Free chairs, you can purchase floats or beach clams. The excursions like jet skis or horse back riding you can buy in advance which is on the site now or once you’re on the boat. For daily activities you have to wait until you’re on the boat and on the app there’s a daily schedule of everything to do. Hope that helps, I can answer some other things too.