Shouldn't be a big deal to leave the battery connected if you're going to move the car every now and again. You should move it or you can get flat spots on the tires.
Also, if it's cold stored I'm told you should store it with either an empty tank or a full tank. A full tank won't have much room for condensation and when you fill the empty tank up any condensation that did occur would be masked by all the fresh gas.
Also, if it's cold stored I'm told you should store it with either an empty tank or a full tank. A full tank won't have much room for condensation and when you fill the empty tank up any condensation that did occur would be masked by all the fresh gas.