Wow. All I did was try to explain my own Christmas eve tradition so that the OP understands that it's important to me to have the whole day off. Why did you interpret that as me saying that I am more important than other people in the store? That's a stretch.
You do know that OP means "original poster" right? Which is you? I thought I'd point that out in case you didn't.
It's just a tradition we have. I think it's a cultural thing as well as a family thing. It's one of the few times I see my extended family, and I don't do any work on that day, including shopping. I don't even leave the house. I guess it's more of a personal tradition, but I'm sure a lot of other people feel the same way as well.
Ahhhhhh, see, there is a difference between "it is a holiday" and "it is a family tradition/cultural thing".
I'm not discounting that, and for YEARS that was the only time I saw parts of my family on my Mom's side. Command performance at my grandmothers. We shifted it to my house when my grandpa passed away and then to my mom's.
But for some people that is also what they do on Thanksgiving - and no one can claim that it is a religious holiday for them. It is one steeped in great tradition and getting crapped on by the current retail working environment.
The part I bolded, that is what makes it NOT a religious holiday and request. Some people truly have religious things - you are claiming it as religious and you aren't even going to Mass/Church services.
I'd go to your ETL-HR and say that you would prefer to NOT be scheduled on Christmas Eve, that you failed to mention it in your interview because you just didn't realize people worked that day (i'm going to assume you are young??). But that you are more than willing to open/work whenever on the 26th. Volunteer for it, try to "trade it".
Retail is rough on family life and traditions. Keep that in mind as you pick a career in the future - you might not have a choice. Work dictates your schedule in a lot of areas.