You know, rather than just going with whose day holidays fall on, I'd suggest discussing a regular holiday schedule, as you may be setting a precedent.
Initially, my ex and I split Thanksgiving: the kids would have dinner with me and then go to Hs house for dessert. (Actually, the first year, the ex asked....through the kids....if he could come for dinner at my mom's house. Ummm....hell no was the answer.)
Later I moved 45 mins away and driving on Thanksgiving is a hassle, so ex and I split the holidays this way: we alternate years on Thanksgiving, and alternate Xmas eve or Xmas day.
