My calendars stay full only using Airbnb.

We ask them to confirm the unit and that they have received each email and that cleanings are in their calendars.

I will obtain my first MFH or SF rental property within the first quarter of the 2022 calendar year.

Check on Vrbo and Airbnb and see how many properties are STR's in that market.You can also see rates people are charging and how full their calendars are.

Just look at your competition and see what they are charging and how full their calendars are.

We also have some 2024 bookings, that makes them 18 months.We do get 3 day stay bookings that fill in the calendar for spring/summer/fall that are usually 2 weeks to 1 month ahead of the arrival date.

There are judges involved and their calendars can get booked out far in advance.

I spaced making a calendar reminder.I am planning on increasing the rent by $120 (5%) upon renewal. 

It was doing great for awhile but we've all seen what the market has done this calendar year...The other option is to stash it in a savings account and while those rates have climbed (1.9% currently with Cap1), that's a lot less than inflation and a lot less than what the market could potentially return. 

Make sure you have a good calendar management tool, such as hospitable, so you don't double book!