Christmas Eve we get together with my inlaws. It is crazy there. MIL, FIL, SIL & Boyfriend, and niece, Grandparents, Aunts, Uncles, Great Aunts, Great Uncles, cousins, the list goes on and on. The over 18 set do a gift exchange but we don't particiapte in that. Those that are under 18 get gifts from those who want to give them something and while nothing is expected, they get quite a bit.
Christmas Day is spent at home with just my crew. Last year my MIL and FIL came over but DH has to work this year so we are doing our Christmas at 5 am and the kids will nap in the afternoon so MIL/FIL will stay home.
The weekend between Christmas and New Years is when we see my side of the family. My mom, dad, sister, and BIL will do a Christmas repeat in the morning and in the afternoon go to an open house at my Aunt and Uncle's house. The open house is when we see all the rest of my family but there is no gift exchange.