I do theater checks occasionally. Here's some tips:
1. Don't buy all the tickets yourself. Do you have friends who could buy them? Or, do what I occasionally do, and spot somebody else seeing the movie to buy your ticket for you:
Tell them that you're an undercover representative from Universal, Warner Brothers, ect, and ask if they would help you. Most people seem excited at the idea of helping with and undercover investigation. This is called social engineering in the private investigator world. And yes, it's legal.
If you actually are doing work for Universal, W&B, ect and you have instructions not to reveal yourself to anybody, pretend to be someone else doing some other type of assignment. Make it seem interesting and most people will be willing to purchase your ticket for you (with your money of course).
2. Don't stand out. By this, I don't mean wear an obvious disguise. Just wear stuff that won't attract the attention of theater staff. Maybe a change of shirt and shoes for each movie. Most employees see person after person, changing your shirt is usually enough to convince them that they've never seen you before. Just keep your head low and don't stand out.
And worst case senerio: Some employee recognizes you as having seen a different movie that same day. So what? He'll probably keep it to himself, maybe wonder "I wonder if that's the same lady who was just in here." I doubt anybody will make a big deal of it.
EDIT: To be concise with this, people aren't very observant. I've learned this while practicing as a lawyer. A crime is perpetrated against someone, they give the police a description of the suspect, once the surveillance video gets reviewed, it's determined that the victim gave a really bad description that looks almost nothing like poor guy who was hauled in (who's perfectly innocent but looks alot like the description given).
If you just change a couple things about your appearance, most people won't recognize you from before.
Edited 1 time(s). Last edit at 01/14/2011 11:42PM by Nichtoliver.