No signing expensive leases that you personally guarantee typically. 

What is each person's role/superpower?

There are areas I wouldn't personally invest that I can speak to, but there are just so many opportunities.

Is that based on an actual study or your personal experience?

It is our personal house and we're in the process of moving back to the east coast (New England area) to a higher COL area.

House hacking will also give you some personal "property management" experience.

I have had phone conversations where I was clear with them, that they were unhappy and we would allow them out of their lease without penalty.

However, my personal opinion, is that its unethical to mark them up beyond what the consumer would pay normally. 

@Romane DaleyYou can't borrow from an IRA; the only way to access IRA funds for personal needs is to take a distribution, which would be taxable, and penalties on top for premature distributions. 

The Dominican Republic can be a great place to invest but, personally, Punta Cana would be the last place I'd invest in.Two years ago, during a meeting I had at the Ministry of Tourism in Santo Domingo, one of the head honchos there clearly told me "If I were you, I wouldn't invest in Punta Cana".