OK, so we do things in different ways. I use a prepress company that deals
with hundreds of publications and so has the ability to handle any kind of
format as standard. So it's not a question of fiddling about.
My deadlines are not as tight as yours, but if I receive a Mac/Quark CD I
can ship it overnight, it's opened the next morning, converted to PDF and I
can download it straight away.
If I get an e-mailed Stuffed Quark file, so the fonts are intact, I can
upload the stuffed file into the repro company where it goes through an
automation process in which it is UnStuffed, opened, PDF-ed, and put on the
server for me to download within a few minutes - without being touched by
human hand. The automation process also does a pre-flight.
The occasional film ad can be sent overnight, copy dot scanned, and, again,
made available as a PDF.
All my digitised ads going back years are stored and can be repeated into
the current workflow instantly.