In TNG, there were clearly no regulations about duplicating other members of this ship’s company, at least not until Barclay’s first appearance; Riker is annoyed to see duplicates of himself, and Troi points out that there’s no reg against it. It’s never said if a ship rule is made against it; I suspect Riker would be fore it, and Troi against.
The holosuites on DS9 were not Starfleet property. What Quark did with Kira wasn’t illegal; just enomously tacky.
I always figured I’d wind up going the Barclay route, too. Although I’d choose Barclay’s life AFTER Enterprise, where he’s on a planet. I can get my Jonesing for unsafe missions on the Holodeck with much more safety. (As mentioned before, I’d get the emergency beam out pin used by Data on Picard just in case of malfunction, and test the safeties every little bit.)
A zombie apocalypse. Totaly would do it with a bunch of other crew mates.
Female here: i forth (fifth?) the sex fantasies.
I have no cite/background to base this on, but i’d think that the holodeck parameters would prohibit the crew from certain things…like rape, killing crew replicas…etc
Only if the safety Protocols are turned off.
(I will now go, read the whole thread, notice this has been mentioned 4 times already, and hang my nerdy head in shame).
You’d only end up getting mixed up with Lex Luthor and forced to try to turn Superman into a robot.
In Voyager the Doctor writes a holonovel in which the crew are all really horrible, which is discovered when a couple of crewmembers accidentally ‘play’ it, so clearly there’s not a regulation against it in their time.
Scuba diving in the reefs of the Carribean. Yes, the perfect gettaway for a space cadet.
I forgot to give my own answer. It’s similar to this, except that you wouldn’t need any scuba equipment; you could just breathe underwater. 
Me: Computer, create a Holmesian style mystery, with an adversary capable of defeating KidScruffy.
Computer: Error. Parameter is infinite.
Me: Okay, an adversary capable of being defeated by KidScruffy.
Computer: Error. Null set.
Me: &$*@!#&! Okay, just give me sex then.
I think people have just about covered everything I could think of, except perhaps a seventeenth-century tavern where I could idle my time away with booze, games, and making music.
Yup, that’s what I was going to say. I’m sure there’s some sort of holodeck co-op. The worlds generated could certainly accommodate enough space for…private sexy time for everyone. Though I wouldn’t be surprised to find out that Federation cadets are already given holodeck time in batches.
You know, that’s exactly what I thought about WoW. But look at me now–raiding four nights a week for three to four hours at a time!
Um.
That didn’t come out exactly right.
I’d use my holodeck time to create a set of mini holodecks. Then I’d rent them out for a price. In lieu of money, people could pay with their holodeck minutes.
The more mini holodecks I can rent out, the more holodeck minutes I accumulate.
The more holodeck minutes I accumulate, the more mini holodecks I can rent out.
So what happens in your holodeck generated gladiatorial arena when you smash open the head of what you thought was a holodeck generated opponent but turned out to be the head of your real life classmate?
If you’re using melee weapons, then the safety protocols will kick in, and dematerialize the weapon right before it strikes flesh.
Not that I have any cite for that idea, but it would be handy.
Why? That’s who I’d be!
I have no idea what that means.
It means, “I always avoided WoW because I thought I’d get sucked in, and then I started playing, and… I kind of got sucked in.”
You know–reassurance, only not.
The mini holodecks would only have to be the size of a bunk. 
I mean the raiding part. What is that?
A raid is a dungeon-crawling mission, complete with boss, undertaken by a team of human players.