Can you post some screen shots to show us the centering problem?
as for the page layout, it may work better to set you page size to the folded size of your invitation. Just do the layout in order the way you would read it, and use print booklet to output it.
or, if you need to set it up on just two pages, do it like this:
Thanks for your reply. I will look into your suggestion for setting up the page layout.
I hope the screenshot didn't get screwed up. Text has been changed to protect the innocent. The Kunstler being off-center isn't quite as noticeable here as with some names, but I still think it goes a little far to the right on the guest names in the screenshot.
It does look off-center. I don't have that font, so I can't experiment, so the only thing I can suggest is to move the text boxes containing the names a little to the left to compensate.
Maybe someone else will chime in with a better idea.
And don't forget to allow a gutter at the fold. Right now, after folding, your text is going to seem a bit too far to the left because there's no space between your frame and the fold, but you do have an outside margin.
How much to leave can be hard to decide, depending on if the opposite page is blank or not. You might want to print a sample on plain paper (select "Spreads" in the print dialog) and add some trim marks so you can cut it down to size and fold it see how it looks.
Sorry for the slow feedback, didn't have time to get back to this until now, but your combined efforts solved this for me. After a lot of back and forth I got the whole page centered on the printout, but I must say that a millimeter on the screen is not the same as a millimeter on the page; I don't know if InDesign, my printer or a combination of the two causes this. Also, I was a little surprised that I had to manually adjust the positioning of a centered item, even if I understand that italics can make things weird.
But I think it looks good now, and that's more than enough for me.
Thanks a lot!
I must say that a millimeter on the screen is not the same as a millimeter on the page; I don't know if InDesign, my printer or a combination of the two causes this.
Desktop printers are built to very loose tolerances for positioning, and you'll see image shifting from page to page in a multiple print run of as much as 3 mm overall in any direction.