Assuming you are allowed to use a shabbos elevator would you also be allowed to walk into a regular elevator on shabbos and just let it go to whatever floor the other people inside are heading?”
Good question. We were taught that on Shabbos, if we needed to visit someone in the local hospital, to wait for an obvious non-Jew to walk through the electric doors and quickly follow that person in. But nonetheless, the doors are remaining open longer because we walk through them, even if initially they were opened by someone else.