Spoiler
Er you mean I should roll it?
Cause you had told me you do that :)
In any case,
[roll0]
I am rolling the base here. I guess I have +10 from the hat and +5 from minor changes as per PHB but those are up to you.
Additionally perhaps wearing the actual uniform of those guys gives a bonus but up to you!
Ishmael does not pause as uncertainty could be attributed to not being sure where he is going if anyone observes him.
He walks slowly and carefully as if making sure he avoids disturbing any of the clients. Thus he spends a few moments to see if someone enters or exits the other rooms and especially the double hinged door so he can get a glimpse of what is behind it.