Packages will show the photos and description of the package, along with any of the contents that you don’t have marked as “hide from contract.”
You can also have Packages who show some contents, or none at all. A good example is a tent, which is comprised of many items, but you’d likely only want the client to see the name of the tent as a whole.
Packages are also a creative way for you to get lead info about a client’s event. You might consider making a “Graduation Backyard Starter Pack” and including the most common things for those events. Keep in mind: you add something about the ability to add more things to the Package later within the description.