Hi there!
Head over to this article (https://help.dropbox.com/storage-space/storage) where we give you a step-by-step walkthrough of how you can check how much space you have in your Dropbox account.
In order to add the wedding photos to your Dropbox account, click on the downward facing triangle next to "Download" at the top left of your screen. Then, select "Save a copy to Dropbox."
