Well, a trip to England would be a bit far to go see the only grandparents! When my MIL was alive though, I put my foot down and said NO. Christmas Day was for us. She was welcome to come and eat with us, but we were going to spend the day at home where my son (I only had him at the time) could play with his presents.
My compromise was that on Thanksgiving, we went there. It worked for us :)