No problem. Glad to help.
iCloud isn't really a place to save photos; at least not yet. The Photo Stream service is a temporary place, designed to keep your devices synced. It does not store your photos permanently. While the Camera Roll should be backed up (if you are backing up to iCloud), this isn't something you can restore to the iPad individually. You'd have to restore the entire iPad to get them, so it's there, but should be reserved as a worst case fall back.
You'd be better off downloading them to your computer, or using an online service like Flickr, Picasa, or PhotoBucket. (make sure you're settings save the full size).
For that matter, never forget the iPad is a mobile device. Anything you can not afford to lose should be saved somewhere else. Even if the software was perfect (and no software is), all it takes is one accident to reduce it to so much junk, and all your content will byte the dust. (pun intended).
Note: if you use Photo Stream to copy the photos to the computer, that will do the job. The pictures are not temporary on the computer side of Photo Stream.