overnight near calais

dnc

Due to timing of work comittments for us and our fellow travel companions we are unable to get to Dover from the midlands early enough to catch an early afternoon ferry and will be too late to use Guines as last arrivals in June are 19:30.  We want to be
over the pond for our first night. Can anyone recommend another site, we are heading off towards Annecy and then down to Med coast taking 3-4 days to get there. Will work out the return journey later!  ASCI or Camping Cheques?