Caravaning with a toddler

Does anyone have some advice on caravaning with a lively toddler? We're new to caravaning and are booked to go to Clumber Park in April (lots of space for the little monkey to run around). I'm really looking forward to it, but I'm starting to get a bit nervous too. Any pearls of wisdom to help us have a good time away with the little one would be wonderful. Thanks. Em.