Factual error: Just as Hutch says the line "Oh it works" and just before the camera cuts you can see an ad for the movie MirrorMask on the back of one of the comics on the wall. That movie wasn't released until 2005, while this movie is set in 1998. (00:13:30)
Factual error: In the scene of the parking garage in Vegas, as the group is escaping the Trekkies, you can see vehicles in the parkade from the 2000's. The movie is taking place in 1998.
Factual error: Near the end, when they have been captured and taken into the room with the big picture of Darth Vader, the picture of Darth Vader was actually made for Revenge of the Sith which was obviously released a few years after this film is set.
Chosen answer: It would depend on what they'd discussed online and his intent. If they'd planned to meet for sex, then yes, that would be illegal and charges could be pressed. Since we didn't learn the details of their conversations, we can't be certain.
Captain Defenestrator