Newbie - Waste Drainage?

Hi all, I am completely new to touring and have booked our first weekend away this week.  We are going to a fully serviced plot in Loch Lomond (electricity, waste and water).  We have purhased a new sprite major 6 and I'm not sure how we deal with the waste element.  Does fully services with waste mean I can hook up our loo with their waste or do we need to manually empty the waste?

Sorry for the silly question!