Might be a simple patch, might be more. 

What alternative options, if any, would you use to temporarily patch the problem to buy time and fix it later?

I like the glamping idea in conjunction with a pumpkin patch, hay bale rides, haunted maze, or whatever you want to do with it.

Say you have matching linoleum and you can patch it on November 28, tell them you will be scheduling someone on or about December 27th after Christmas as to not interrupt their plans.  

For example, during the inspection of a flipped property, we learned that the plumbing system was shot and the flipper patched over leaks.

A small generator may be enough, but you need proper patch in on the circuits.

Patch and repair for an Airbnb. 

And then there's the plumbing....you can patch in sections that were stolen with PEX.I would budget $15k for electrical and $5-10k for plumbing....

The two walls that I had issues with under the dry wall are brick so I'm thinking of exposing the brick since that's in style, cleaning the brick, patching up the missing mortar and painting it with a water proof white paint.

Painting the leveler is always going to look like something was patched up.