> I've been told to give super admin rights to VIPs that had no business with such things many times over the years even though it overrode all
One can establish the power to say 'no', at least in many places. The systems are your work domain (depending on your job title); you can make clear that outsiders are not permitted inside.
An essential is to establish credibility: 'Leave it to me - stay off my turf - and it will get done.' When they say the VIP needs something, find out what they really need and deliver that with amazing promptness and reliability (i.e., no saying later, 'oh, I didn't think of that!'). Everyone will be happy and impressed.
It also gives the impression that what you say is serious - you really mean that these security issues are serious. If you go along with the request, you convey that it's just talk.
Easily said in a comment, much harder to do of course. But remember that if you follow their instructions, and stuff goes wrong, it's your fault - your name is on the systems; the failures and successes are your reputation; and also you were supposed to advise them ...