I suppose that in a previous scene, Amazon Echo reminded this guy he was getting married today

Think about it- this guy is seconds away from getting married, and he's already assuming that a year from now he'll totally forget the date of his wedding so he better let Amazon know so "she" can remind him.  Wow, what a great catch.

Prediction:  A year from now, Amazon will remind him that it's been six months since his wife threw him out of the house because he was incapable of finding his ass with both hands, a flashlight, and Amazon Echo.  Because seriously- if you walk into your wedding figuring you won't remember the date A YEAR FROM NOW, you aren't taking it very seriously and it just isn't that big a deal to you. Cripes, I've been divorced for more than twenty years and I STILL remember my anniversary date.

One more piece of evidence that this guy is a totally clueless jackass- he's telling Amazon Echo to remind him that today is his anniversary "one year from now."  Hey, buddy- if you do forget your anniversary as you expect you will, being reminded of it ON YOUR ANNIVERSARY is not going to help at all.  Even if you ARE miraculously still married, it will be WAY too late to do anything that doesn't stink of last-minute Yes Honey I Actually Forgot our FIRST Anniversary asshattery.  Loser.