Most resorts have child care available as part of the package. The only thing you have to worry about is where she will sleep. I'm not sure who you trust in your wedding party for her to sleep with at nights, but as far as the day time, she will have fun in the playroom. My kids ages 8 and 14 are going as well. They will be sleeping in the room with my sisters. During the day, they will be in the playroom. Hope this helps.