For the longest time, yeah, I thought there was a big difference there, until I met my fiance about 7 years ago.
I met her in a bank where she worked as a teller. This bank was one block from my house. Not only did I have a personal account there, but I also stopped in there frequently because of work accounts as well. We start dating. Eventually things get more serious and she moves in with me. Now, not only did she live in my house, but she worked one block from it. Not only did I see her every night, but I had seen her every day as well because I had to go to this bank daily. Her phone number was my phone number. When her friends called, they called me. I had caller ID all over the damn place, and I knew who was calling when the phone rang. I never let her go out alone to bars and clubs unless I wanted to go out alone, and when I did let her go out, her friends had to come by and pick her up so I can meet them. I always asked where she was going and I always suggested I might stop by with my friends just to say hi and keep moving on, which I sometimes actually did. I knew a lot of people as well, and she would often be surprised to find out I already knew a few of her friends. Basically, this woman had very little to no breathing room to pull of an affair..... but she did it anyway.
The man she cheated on me with wasn't some guy she met in a night club, a bar or a party. He met her the same way I did, in the bank. When she left the apartment to bang this guy, she didn't tell me she was going to a night club, a bar or a party. She told me she was going to baby sit her nieces. She even gave me a phone number to call, which I did call, and there were children there. The truth? These were not her nieces at all. The guy she was banging had two children of his own. They were just waiting for the brats to go to bed.
Since then, I've taken an entirely different approach. I realized that women normally don't cheat because they're drunk and surrounded by men, they cheat because they are unsatisfied, and when that happens, it is going to happen in ways you can't control and never expected. That's actually the goal of someone who cheats: to do it in a way that wouldn't raise suspicions. That's why a grocery store is just as dangerous as a bar, because it has far more to do with intention than atmosphere. If she isn't going to the bars mad and unsatisfied, I wouldn't worry. In fact, if I were in Workerouter's shoes, I'd give her a good bang before she goes. Send her happy. Send her satisfied. Never let her go mad.