When you have guests for Christmas (invited ones not pesky gate-crashing types) do you still do all your Christmas Traditions (even though your guests might be a bit eh? )
Are you " Ohhh, guests, will accomodate them a do what they want"
or
"Sniff. My house, My rules hun "
We have specific food on the 24th/25th/26th.
At specific times
Being a goodly hostess , we won't have sweetcorn grills because it makes my SIL physically ill. (I'm kind like that
)
Christmas Eve is a lunch time meal then an evening buffet (my family will go to Church late )
My Dad wiill take himself out for a walk (he always used to take the DC to the park, but they're too old now), he can't be confined to the house for three days.
Christmas Day is when it's dark and finished in time for Dr Who.
I cook with the soaps on 
My DC are teen/pre teen so we don't have the 5am wake-up call and we don't have to worry about too much routine.
Added to this, DF is diabetic so meals need to work for him time wise.
What do you waver and what's a Set In Stone Tradition in your house?