I am quite serious here. You already have the URI's, and you should be able to write this script in under 2 minutes. This reminds me of this: http://news.ycombinator.com/item?id=703585
The amount of time spent defining what you want is surely going to be equal to this.
> It took me exactly 90 seconds to get the request to him
Depending on how you code it's likely to take you more than 90 seconds to: Fire up the editor, switch into mental design mode, create the initial script structure, write the script, figuring out authentication/cookie management issues, picking the right regex (or selector), and then debugging the typo or the 2 unexpected problems that came up (as they will on average).
I think you can see the time and mental differences between that and:
"Here is the URL and credentials, can you log in, visit each page in my gallery and send me a zip with all the pictures?"
In the end you'll be more proud of a script approach, but that doesn't give you what you wanted in the first place-- i.e. avoiding the drain on your time when you have more important things to do.
The amount of time spent defining what you want is surely going to be equal to this.