Haworth park in Bellevue is still closed because of the flooding as are all of the close parks...
I would suggest Walnut Creek (Papillion NE) for near by. Louisville SRA (Louisville,NE), Two Rivers SRA, Mahoney SRA (Gretna). Mahoney has lots of activities for families. If it is warm, Louisville is nice for fishing, swimming. Walnut creek has nice walking and bike paths and good fishing around the lake but no showers.
2008 Silverado EXtCab 6.0 Vortex Max
2010 Forest River Surveyor SV-294
Equalizer 1000 WD/SC hitch
Prodigy Brake Controller