Also, if yes, how far down the corporate food chain does the prohibition exist if my son works as an Investment Banking analyst for a company used by the GP or works for a division of the GP's firm or a division of the IB's firm?

Without a job you will never be able to invest to the point where you can quit working.A W2 puts food on the table, generates savings for further investing and is necessary to be able to qualify for financing.

Thank you all for giving me some good food for thought!

just some food for thought; why are you planning on being poor when you retire?

Believe me, I have gone up the food chain as far as I can.  

Again free advice is worthless, so I'll take it with a grain of salt.

Just food for thought.

So I started a food truck.

The partner also claimed to have broken her knee cap falling in the driveway rolling the trash container up from the street; when I commented it must be pretty painful walking around on it as I watched her do so she said she had a "high pain threshold".Sometimes it's just better to either take these complaints with a grain of salt (so to speak) or charge the tenants for these nonsense service calls.Gail

Food for thought.