I'd actually say that there's a relatively high risk of breaking things in Maracaibo: a lot of the passage is fairly small and the formations are in very close proximity to cavers. It needs great care.
I wouldn't say it's a good place to go in the wet. Apart from the access through the main drain, there is a very low section half way along (which may need excavating), and it doesn't seem like it would take much for that to sump off.
One other thing to bear in mind is that it takes quite a long time to get to the very end of Maracaibo. After a point, the formations completely disappear, and you're left in a sort of bacon-slicer rift which continues for quite some way.