What happens if customers do not go into the retail places and traffic starts dropping off then those businesses want to move or ask for a rent reduction?

They hold up payments till the vendor agrees to a reduction. 

The process to applying for reduction of code enforcement violations seems to be very standard. 

@Derek Bonanni So if all the hard-facts, like credit, background, and income are all good, why put so much weight on the statement of this random caller?

It can be a good investment but the return will have to come from principal reduction and appreciation, not cash flow.If you can continue to find and flip with this type of profit, I'd recommend making hay while the sun shines and continue to do it (at least until this opportunity dries up).  

They often take on appeals and get a certain percentage of any reduction won.

Absolutely ask for a reduction!  

That popup message constantly asking you to release those "blocked" days on the calendar could be a sign.to put numbers in perspective, HA+Vrbo weights $166M to be compared to airbnb $2B (2016 numbers). 

And like Steven I am (still) weighted heavily to RE today.

For this reason I never have the seller fix anything I figure about how much it will cost and get a price reduction so I know it is done and by a contractor I trust.