The holidays are among us starting today for a lot of people. People eat and then eat some more. Especially Thanksgiving. Does it matter if you pig out this one day? Heck no! Even if you are the strictest of staying the course on your eating, one day will not hurt if you splurge. Heck, even a couple days. The caveat is that you go right back to your normal eating and then stay the course as ususal. Your body can't get "fat" in two days. Don't look at the scale though and freak. You'll probably gain some water weight though depending on your normal diet. It will stream away. ;) Remember, the scale lies all the time so don't use it much.
Enjoy the time with family, eat and be merry!!