Yes, don't hit anything
Probably much as you'd expect, although different airports have their own ideas of what it takes to pass.
I would make sure you know where you can and can't go, speed limits, rules for giving way to aircraft, runway crossing with and without radio, various ground marking (CAT III holding positions).
Just make sure you keep a good lookout. The airport wants to make sure you can operate in an unusual environment safely, without causing trouble.
Will you be driving all over the manouvering areas, or sticking to vehicle routes only. Depending on what you are going to be driving and where may give you some indications as to what they are looking for.
Common sense will probably keep you out of trouble.
Regards Expat