I'd bring the Vest just in case you crave an extra session you won't be at the RT's mercy. Also sometimes they are on a set schedule and for me I need Vest first thing and last thing before bed. Bring work out clothes and sneakers. Make it clear you don't want to be in bed the whole time. What is their plan for exerise for you? Crocs are great for too and from the bathroom because they can be cleaned when you get home. Ask for a case of water bottles from the cf nutritionist that way you don't need to deal with skeevy hospital water. Some comfort food things you wouldn't usually buy fruit roll ups what ever. Tea. Your eflow. That's all I can think of that others haven't mentioned. I haven't been hospitalized since 2008. I hope it's a good break and that it's a postive, healthy experience.