However, I blocked the dates until September 20th to complete some necessary repairs.

If the rent amount, due dates, etc. are specified in the lease, there’s no need to provide an invoice.

I expect that I'll be reserving time in various resorts and farming those weeks out to perspective vacationers, does anyone know if VRBO, or AirBnB, or some other site would be most appropriate for this approach?

Yes you can post listings from different areas into OneKey and they will still show up on public sites like Zillow/Realtor/etc.

Hello everyone I’m new to the site.

Now I'll lurk on the site until I have something to contribute. 

You cash flow with $50k homes with strong management with strong planning and you will make a lot more money then waiting for a guest to give you a ****** rating on STR sites.

I had given them a set date of when I would file my complaints online.

To solve this, I built a custom mobile app to handle rent payments and due dates because no other management software can handle the payment schedules or turnover.

Also if you're using conventional financing, you will need to wait at least 6 months from your purchase date to use a new appraised value for a new loan.