We banned them from a condo complex because they disrupt quiet enjoyment of the property for actual residents and owners and result in higher costs not covered by condo fees.

I don’t mind the hard work, unfortunately I just don’t know what hard work I can do, other than disrupt a paying tenant base and hope that a buyer comes along.  

But any disruption to the market (regulations, weather events, more competition, etc) could impact you severely.

As an agent, I have access to several off-market options at any given time and would like to have serious buyers I could present to before disrupting tenants and causing headaches for property owners/managers.

Another option is compensate your tenant for the showing disruption.

This minimizes the disruption to the tenant while encouraging competition among the home buyers.For every group showing successfully completed, we gifted the tenant with a $25 Longhorn's Steakhouse (or Red Lobster) gift certificate.

It's disruptive and a lot of work to remove/throw away food and relocate for a few days.

Repairing lines under a slab is expensive and disruptive, thus it is reasonable to request a scope for “slab” houses.

Seller is not going to allow this disruption.

But if you get a hearty "FU" response then it's because our industry is at the point of disrupting people's daily lives, which is not cool.