Are you wondering if you need to bring stuff like towels, shampoo, soap, etc..? These items are provided. You will find H20 soap, shampoo, and body lotion in the bathroom. In the closet, you will find a safe and against one of the walls, there is a desk with a hairdryer inside one of the drawers. There is also a small fridge and they provide an ice bucket and glasses. If you need ice, you can either call room service or ask your room steward.
Basically you just to bring yourselves, comfortable clothes and shoes, makeup, jewelry, shoes, and whatever else you would bring on any other trip.
If you search some of the other social media sites, you can get ideas for other items that you may wish to bring.
Above all, don't get stressed out and have a lot of fun.