In all reasonable circumstances you should be okay.
[The only unreasonable circumstance I can think of is if you meet a guard who is having a bad day, but even then I think you would be okay anyway, other than getting a little bit of verbal grief.]
Yeh, am with Cooper7 on this. Have the details in the car and you should be set. Like the other guy said, if they are having a bad day they will screw you!