I think that USPS is going to get mail to you.... On their time frame and terms. I understand delays of some sort with the Christmas season, but I do think it's unfair that they will prioritize guaranteed shipping (that is tracked) over airmail, but things are what they are.
My informed delivery hasn't been working out so well.... The last couple times I have EVEN been able to log on there was some blanket statement about "Understanding this is an estimate only and even if it shows as "delivered"' or "on the way" it may still be a day or two out from arrival."
My only question then is, WHY have the service. There's no point "tracking" everything "carefully" and then saying it's going to be inaccurate--- ?? Have the trackers out delivering mail then!
I do try to be understanding of the season and all, and even with one of the tiniest "regional" USPS offices that "makes up" their hours (and I do mean it, I have gone there on occasion to send stuff, only to be confronted with a sign that says, (scrawled, handwritten) "today's hours are...." I still think USPS does a better job most times than not. But, I'm trying quite hard to be charitable here... If you had asked me what I thought about USPS right AFTER I encountered the sign, well, it may have been quite different.
Anna