Harlequin's Back, How should you run this classic adventure? Options

[DuckEggBlue Omeg...]

A campaign I've been running on and off for some time is coming to an end (some players have left the game and some are leaving the state, perhaps never to return) and I thought I'd wrap things up with this classic, but I'm not sure if I should run it as is or alter it significantly.

For example, the campaign has had a horror influences, one character especially, and part of me wants to alter things to better reflect the metaphors that have already been used and this would involve something like a cave rather than a bridge. Also, there are no female PC's anymore, and cutting out the Lancelot adventure doen't seem like the worst thing in the world. There are a few other things I've considered aswell.

On the otherhand, I keep thinking if I'm going to run Harlequin's Back then I should just run it, and concentrate on avoiding some of the pitfalls of the adventure, instead of potentially creating new ones.

Thoughts?