Waitress' have bills too....

Awkward is when a provider turns out to be a coworker. Had that happen eons ago. I suspect your waitress is much like my coworker back then and will want to maintain discretion so it wont come up inappropriately in front of others. So I say enjoy! The secret itself can make for a little more fun later

As I said, I had a great time (even plan on going back after New Years.) However, the idea of a girl possibly having access to my real life information makes me nervous.  All it takes is one misunderstanding and now she'd have this to hang over my head.

If you are planning to run for president, have your attorney set up a hidden account and pay her off. No one be the  
wiser, that is unless you win the election.

I am sure she wants to remain discreet as much as you do so I would not put too much thought into it. Go back to the restaurant if and when you feel comfortable.