There are several state parks near Tavares as in a 20 minute drive on US 441. Lake Griffin State Park is between Eustis and Lessburg. You could head east a Little bit near Apopka and stay at Wekiwa Springs State Park. I do not know of any private RV parks there. There is excellent camping in the Ocala National Forest and the cloest campground to Tavares in the Ocala would be Lake Dorr and then there is Clearwater Lake near Paisely, but this is a bit further north of Tavares, but the commute is easy down SR 19 and the back roads of Lake County.
Bob, Tonya and the kids
11 Rockwood Roo 233S
08 Grady White Seafarer 228
08 Tundra 5.7 liter 4x4 crew cab TRD limited
08 Toyota limited 4 Runner Iforce V8 full time 4WD, tow package