There are two parks near Herkimer (eastern side of Utica) but those parks don't open til mid April or the 1st of May. Is it possible for you to stay in the driveway of your family? The only other park I can think of that may be open is in Verona (the rv park at the Turning Stone Casino with full hookups) but that will be a bit of a drive to Utica but that may be your only option if they open that early. Late April or early May everything is open by then. With the temperature at 4 degrees today, April seems like a long way away.