Choc doesn't usually get a chance to go out of date around here so I don't know the answer to this 
I've just been given a couple of Advent calendars (don't ask!) and the best before date is in May 2011. Will they still be OK at Christmas?
We're already eating chocolate Santas & tree decorations etc. which feels really wrong on a lovely Spring evening, but Advent calendars seem even worse somehow, please tell me they'll be OK 8 months out of date!