It is good to hear that you had a nice restful time on your vacation, that is what they are for.
My daughter and I flew to Massachusetts from Florida it cost us 50 dollars each round trip, she got a good deal on them, and like you she planned it in advance.
One of the planes we got on was not full when they announced that there would have to be so many people in the front, middle, and rear of the plane because it was finicky when not full. That was not a good feeling but we had no choice but to board it.
All four flights I was on we had to do the same thing as you. It was a little off-putting to me, too!! I think why even a week later, after being home, it came out in my writing.
January seems the best time to travel by plane :D I am so happy to hear you too got away for a little while!