We've had similar comments about not wanting staff to stay and try to fight the fire.
However the advice we have had (that we pass on to staff) is that the extinguishers (and fire blankets) aren't to fight the fire, but are to allow staff to clear an exit route to get themselves out if a fire is near the exit.
Hopefully alarms will give enough notice that everyone can get out before it gets to that point.

Regardless of what you put down in a policy, people will grab their personal items - so they will be in breach of the current policy.
I'd rather set reasonable expectations (e.g. purse, wallet, phone, keys. Maybe a small bag?) Set a limit around something that can be held in one hand, so they can still have a hand free for the stairwell and have to be able to take it within 1 min of alarm to get out (or less?). Then explain why they should only grab those critical items and why they need a free hand.

At a previous employer we had overseas students visiting and working for 6-12 months, this often required them to drive so we would arrange for a driving instructor to take them for a drive and give them feedback.
It also gave the company some confidence that they were comfortable on NZ roads (and with NZ drivers), before they went out on their own.
Maybe talk to some of your local driving instructors about what options are available?

Hi Julie, we're using GetHomeSafe with their app alongside Garmin Inreach devices (for when staff are out of coverage).
Our staff have found the interface simple to use, andtheir dashboard is easy to manage. I am also looking into their v.bttn devices for use on our sites (linked through the app).
They have an option for motion-monitoring (can turn it off to save battery life if not needed) through the app, and the devices swap between the inreach and the users phone depending on coverage. We have on-call staff to monitor check-ins, and chase up overdue staff - but in an emergency it goes straight to RCCNZ. There are also messaging options through the dashboard to the device in the field.
The dashboard allows simple management of who has access and there are various useage reports as well.
They have been great to deal with and are actively updating the software and adding more options. They have also been responsive to suggestions for changes to improve the software.
Overall, I'm pretty happy with them!