The journey time from The Port of Calais to Les Lacs du Verger is approx 3.5 hours keeping to all speed limits, which you are advised to do. The French Police are vigorous in their application of the law and fines can be both immediate and severe.
P&O run around 23 sailings per day between Dover and Calais with a journey time of approx 90 minutes. Check in for vehicles is 30 minutes.
The venue is sited close to Vitry Le Francois which is close to the junction of the N44 and the N4 in the Marne Valley South East of Paris.
A good site for full information on road travel in France can be found here.