Recommend repairs to reduce moisture damage.

If specific concerns are raised (structural, moisture, electrical, etc) then the engineers or other specialists/trades are brought in for a more thorough examination.  

They need to get in there to check the moisture in the walls right now.  

The advantage to this is that the fan can continue to run even after the tenant is out of the shower and continue to remove moisture from the room.Anyway, that's just a few ideas.  

The subfloors are typically a composite material and any leaks or moisture inside can rot them quickly and they crumble.

North Florida, hurricane / tropical storm area....So, with the damage being done by the POWER not being on, the floor can and will separate from moisture...

Water intrusion into any part of any physical structure on the Property; leaks from or in any appliance, pipe, slab or roof; standing water, drainage, flooding, underground water, moisture, water-related soil settling or slippage, on or affecting the Property?

Unless you've got something unusual <$500.I'd be looking for stuff like:1) Major CapEx - Life of roofs and siding and paving and plumbing2) Moisture invasion ANYWHERE since this gets more expensive the longer you wait3) Making sure stuff (like remodels and wiring) is up to code. 

The inspector also noted that there is moisture in the walls detected by his tool. 

Next is Structure items such as how the metal structure is, whats the site moisture conditions, is their tie-downs and what type are they, is it on grade, posts, free-standing, and especially roof coatings.