I'll start with a simple list and hopefully others can help me to expand upon this and further enhance it next year. Not all of these are RV shows. Some are simply non-RV related events (Burning Man, fireworks, Balloon Fiesta) but they attract a large RV crowd. Please let me know of any others that you might recommend and we'll add them to the list.

RV Buyers Boot Camp
Tampa, FL
January 11, 2020

Xscapers Annual Bash
Lake Havasu, AZ
January 11-19, 2020
(Sold out)

Florida Super Show
(Tampa RV Show)
Tampa, FL
January 15-19, 2020

The Big Tent Show
Quartzsite, AZ
January 18-26, 2020
(free)

Rubber Tramp Rendezvous (RTR)
Quartzsite, AZ
January 18-27, 2020
(Minimalist nomads)

Spirit of the Road Rally
Live Oak, FL
February 12-16, 2020

Western Winter Blast
Lake Havasu, AZ
February 13, 2020
(Fireworks industry showing off their fireworks)

St. Louis RV Vacation and Travel Show
701 Convention Plaza, St. Louis, MO
February 21-23, 2020

Family Reunion Rally
Madison, FL
March 18-14, 2020
(Sold out)

The RVE Summit
(RV entrepreneurs summit)
Lake Guntersville, Al
March 19-22, 2020

FMCA Convention
Tucson, AZ
March 26-29, 2020

Alumapalooza
Jackson Center, OH
May 26-31, 2020
(Airstreams)

Golden Palms Vintage Trailer Event
Hemet, CA
April 22-25, 2020

Escapees Escapade
Rock Springs, WY
June 21-26, 2020

Xscapers Alaskan Cruise
Seattle, WA
August 14-21, 2020

Burning Man
Black Rock Desert, NV
August 30 - September 7, 2020
$425 per person

Battle Born Get Together
Fallon, NV
September 10-13, 2020
(first time event)

Hershey RV Show
Hershey, PA
September 16-20, 2020
(Largest RV show in the nation)
1400+ RVs on display

California RV Show
Fontana, CA
October 2-11, 2020
(Largest RV show on the West coast)

Albuquerque Balloon Fiesta
Albuquerque, NM
October 3-11, 2020

Full-Time Freedom Week
virtual event
mid-November, 2020