This is usually the biggest concern landlords have when leasing to operators trying to arbitrage and they're afraid of people partying and damaging their property.

The biggest thing to help ease investors is have proof of payment, proof tenants are current, maintenance history(at least recently), have leases on hand, transparency, and being able to walk the properties. 

In my eyes, the biggest liability is trusting me as an investor to generate cash flow.

As some of the biggest names in this community say all the time " You miss  100% of the shots you don't take" (Wayne Gretzky) I just want to take that shot, and if I miss I didn't loose anything.

What were some of the biggest mistakes they've made in there real estate investing careers?

What has been your biggest mistake as an investor?

My biggest action item is finding a way to manage this park from a distance.

yes social media is infested with fake lenders  that will just take your money.PML are those you meet in person very rare you will find a TRUE PML on the internet VERY RARE. 

My biggest advice is “do not quit your day job until you have the new cash flow”.Only way to make enough will be multiple units (apartments).

They are your biggest buyers and you will not find them in bad markets and they do not like super distressed homes.