A Self-Organized Partner's Program

There does not seem to be an official partner's program, although there is a list of proposed things to do in Frankfurt.

Which does not prevent the partners and the attendees to organized the time they won't spend together.

Lonely partners

First thing is to list people, and what they are interested to see.
(Yes, it's safe to give your Act password to your partner. ;-)

Estelle (coming with Philippe Bruhat (‎BooK‎)) is interested in monuments, museums, parcs, old streets, a break in a cozy tearoom after all those visits

Then it's possible to make up small groups that will meet at the venue and then run away in Frankfurt to do touristy things, before regrouping with the attendees at the end of the day.