So I went the Hilton hotel where they held the conference/event.

You can have your license held by a holding company. 

Toilet is held by 2 bolts and nuts and any skilled person can replace it in 10 minutes unless it has cast iron waste line or an uneven floor.

Was the LLC member held personally liable?

We bought couches from Lazyboy that have held up really well and I expect they will last many more years.Some Amazon stuff is good, read the reviews. 

Instead, it is held in an escrow account that you take draws from as you complete work.

-Tax Reduction [no longer available for new investments] - Furthermore, the taxes on those capital gains may be reduced if the Opportunity Zone investment is held for at least 5 years — and even further reduced if held at least 7 years.

Earlier I showed a picture from underneath showing the plywood held up by bush sticks. 

As long as they were being held and use for investment when you sell  othem.If you 1031 from A to B and then later convert B to your primary residence.   

Here is the story:We sold a portfolio of rentals to a single buyer and part of the deal is we held back a 10% mortgage.