Do I have to leave the trailer plugged in?

As long as the outside temperature is above freezing then you do not need to leave the trailer plugged in.  We will usually get a trailer completely set up for your event and then unplug it. All you need to do is plug it in again a few hours before your event and it will be ready.  Once the event is over, simply unplug the trailer again and leave it for us to pick up.