In looking at holding a rally in the area, I found several private rv parks.
The West Omaha KOA is fairly well rated but I have not visited that park yet.
http://koa.com/campgrounds/west-omaha/
The other private campground I found was
Pine Grove RV Park
http://www.pinegrovervpark.com/
It is located on I-80 between Omaha and Lincoln.
The biggest issue I see for this RV Park is that it is directly adjacent to I-80. I guess if you like noise it probably would be fine. I try to avoid parks that have an Interstate view in the backyard. I have not actually visited this campground yet so I cannot comment on other features though.
River west park, Omaha, NE, Northwest of
http://www.riverwestpark.net/
http://www.riverwestpark.net/campingratesreservation.html
Check the rules to make sure your compatible with them.
The other campgrounds in the area are City, state and county parks.
Two Rivers state recreation Area, Waterloo, NE. West of Omaha
http://www.outdoornebraska.ne.gov/parks/guides/parksearch/showpark.asp?Area_No=175
http://www.reserveamerica.com/campi...roundDetails.do?contractCode=NE&parkId=230175
Fremont Lakes State Recreation Area Fremont Nebraska, Northwest of Omaha
http://www.outdoornebraska.ne.gov/parks/guides/parksearch/showpark.asp?Area_No=78
E.T. Mahoney State Park, Ashland, NE, Southwest of Omaha
http://outdoornebraska.gov/parks/park_pages/Mahoney_SP/
Louisville State Recreation Area, Louisville, NE South of Omaha
http://outdoornebraska.ne.gov/parks/guides/parksearch/showpark.asp?Area_No=111
Lake Manawa State Park, Council Bluffs, Ia
http://www.iowadnr.gov/Destinations...etails.aspx?ParkID=610144&idAdminBoundary=193
Wilson Island State Recreation Area, Missouri Valley, Ia, North of Omaha
http://www.iowadnr.gov/Destinations...etails.aspx?ParkID=610118&idAdminBoundary=221
City park/campgrounds in Omaha
Glenn Cunningham Lake 58 RV sites
N.P. Dodge Park 46 RV sites
http://parks.cityofomaha.org/parks/campgrounds
Arrowhead Park, Neola, IA, North East of Council Bluffs
http://www.pottcoconservation.com/parks-and-habitat-areas/arrowhead-park/details.aspx?ID=60
Botna Bend Park, Hancock, IA, North East of Council Bluffs
http://www.pottcoconservation.com/parks-and-habitat-areas/botna-bend-park/details.aspx?ID=4
Hitchcock Nature Center, Honey Creek, IA, North of Council bluffs
http://www.pottcoconservation.com/parks-and-habitat-areas/hitchcock-nature-center/details.aspx?ID=47