Honestly, I don't think anything special.

It just means you got all 25 items. There's no bonus for it.

I don't remember anything like such happening last year. x:

Thanks for telling me :}

I'm not sure how the Holiday Glasses are Holiday Glasses. But they were free, so I guess I'm okay with this. xp

If we miss a day, can we go back to that day and get the prize, or is it gone forever for us?

Gone forever. The box becomes shadowy, as if reminding you and taunting you.

I must say, that is kind of mean, but I see where they are coming from.

Yeah, I would have had the biggest hissy fit if my family would have been like, "Sorry, you did not get your present yesterday. Now you'll never get it." lol

Woah, wait. Advent calendars are a real thing?!?!?

Yep. If I'm not mistaken, they go back in history, actually. Or, my mind made that all up. I'm not sure.

But they are real. Typically, it's a small prize like a candy or little trinket. My Advent Calendar that I had as a child was a cloth thingy that hangs somewhere. It has 25 small pockets (the right size for one of those snack-sized pieces of candy or a ring or necklace or something) and was joyously decorated with festive colors and bits. Each morning, I'd get to get that day's prize.

That is awesome! I must get one of those!