I just ran this module for a local convention.
The seven players used the pregenerated characters in the back (Option I).
At times the players went from being extremely cautious to downright reckless. The first 1/2hour was spent investigating the three entrances, but without going into any of them. And at the end of the 1st hour all the characters ended up nude. One PC lost his arm--despite losing a large part of a 10ft pole in a certain trick. I really don't know what he was thinking.
I graciously let them re-outfit themselves with mundane equipment from their camp. Since they were high-level, I assumed that they brought a number of hirelings and sufficient equipment for the expedition--that and I didn't want the game to end an hour into the session.
Four hours later, only one character had died. The rest had been beaten and bloodied by the various tricks, traps, and creatures of the dungeon. One character almost died of poison, but I allowed an optional rule in the DMG that it takes about a minute for a character to die of poison. So the cleric in the group saved him. I was sort of disappointed at the low mortality rate. Characters kept making their saving throws.
The session ended, however, with most of the group dying in an explosion. We felt that was a good stopping point and plan on possibly continuing at a later date.
It was wonderful. The players enjoyed the old-school feel of AD&D and even liked out it was a simpler game. I had fun running the module, and watching the players cringe every time I smiled.
If any PCs manage to make beat the module with their original characters, I plan on printing off a certificate declaring that they have "Official Bragging Rights," signed and dated by me.
