Agents can host an Open House and allow potential Buyers to walk through without having agreements in place. 

As a co-host for short term rentals, you may not need a license as long as you're not crossing over into activities that could be considered brokerage activities like handling any contracts, collecting rents, doing any accounting, approving tenants, etc.

I heard many hosts say that they rarely get any bookings on FF.  

Why don't you take a few months and attend a few of the BiggerPockets webinars hosted by Brandon, listen to some of the podcasts, and read a few of the recommended books.

This past weekend, the guests tripped the circuit breaker and neither the guest, host, or co-host knew how to locate and reset the breaker.

Another solution is to simply list it as an STR and say "contact host for long term rates".

Maybe you can find other hosts to split the cost.

RW discovered that most clients shop with a "what are the monthly management fees" approach and not a "what are all of your revenue streams" approach.RW competes with a very competitive flat monthly management fee but then charges a minimum of 1 full month's rent for leasing and a host of other fees. 

I know Air/VRBO are strongly pushing for hosts to offer non-cancellable bookings at a 10% discount. 

I heard a podcast the other day with a host saying something along the lines of "there's 3 phases of investing: starting, scaling, and harvesting."