I have had an hour of looking for hotels. Budget of course!
On Tesco's Clubcard site there is a link where I can turn £25 of vouchers into £75 of travel money. The Shuttle for a car is in the region of £95 for a five-day crossing. So ontop of the vouchers it will be about £20 in real hard earned money.
Next stop, booking.com to look at hotels to fit in to the plan. Sunday night in a Premiere Classe in Torcy. Average reviews but the idea is it is somewhere to sleep the night before a day of queuing for rides (glass half empty view) or a day of excitement on the rides (glass half full view).
Two nights in Epernay so we can visit a few champagne houses and then home from our mini-break. The hotel has parking on-site, is a few minutes from Moet & Chandon and has free wifi to record all the details!
Attached map gives a rough idea of the trip.