Compliments on a gallery that easily does something unusual that I can't get other opensource galleries to do.

One thing remains: I don't need EXIF data, but I do need to display information that administrators can enter in the additional fields, such as "Location", "City", "State", etc.

It's nice to have these fields, but I can find no means of displaying the information entered in these fields.

Even if I'm only missing the obvious, any hints will be appreciated. Thanks.

http://www.zenphoto.org/documentation/functions/_template-functions.php.html#functiongetImageLocation
I am sure you find the other function. You can also use the object model directly.

So, what I'm trying to do requires direct editing of the php script? I'm likely to break zenphoto all to pieces doing this.

No, it does not require editing Zenphoto but whatever theme you are using. Not everything is built in every theme and these fields are in none I know. Review the theming tutorial to learn the basics of Zenphoto themes.

Ah. Well, I'll mess with some theme or other. In the meantime, zenphoto developers might experiment with a switch that generic themes could turn on or off to display these fields.

We could do but these fields are all purpose fields although titled so you can use them as you like. If we add them someone someone will not like the order or the place (no one will probably use the location field as "location" and so on) so it is far easier to let users do that themselves. This is not really hard and you only need really basic knowledge.

Custom things sometimes require custom work and this theming is the actual flexibility of Zenphoto.