Thee all seem like things people expect to have access to.As far as the noise form gaming I would remind them others have a right to peaceful and quiet enjoyment of their place as well.

You place a call to your insurance provider and they tell you that a service member will be out next Tuesday to access the situation at the cost of a $99 deductible. 

With listed companies, everybody has access to the same information.

Auto locking access doors for common areas, garages, laundry etc. 

How to get keys to vendors to gain access?

If you have access to funds already, no need to knock on too many banker's doors. 

Many training videos, maybe some are accessible prior to signing up?   

It's a special town and well situated for real estate investing with easy access to both the Baltimore and Washington DC metro areas. 

I've replaced so many of these over the years & it can be an easy job if the pipe runs are accessible or a nightmare if you need to go through walls.The last one was a MF that had a mixture of Galv & 3/8 water Cu lines connected without any catalytic protection so the joints all had severe galvanic corrosion & were leaking.

That being said, they may not be doing it directly themselves, for example they may hire an agent who has access to some off-market listings as well as doing a general search on the MLS.