I don't know about your memory but mine took about 3 days to recover from the Holidays. Strange foods, relatives' voices and mostly sleep deprivation were the main reason, I think, why it was so bad. But there was a light in this darkness:
Here it is. My dad is on the right, my sister on the left and the light is straight ahead. They had just picked me up from the terminal in Montreal.
Jokes apart, I did manage to achieve something spectacular in a memory demonstration that I gave my sister on the second day of my visit. I told her that I would look briefly at all the cards of my deck and then turn them over and separate all the red cards from the black ones, from memory. I timed myself; it took me 51 seconds and my color recall was perfect. Not only was this a personal best but it was the first time I had ever memorized correctly 52 different things in under 52 second. I really said "Wow!" to myself there but my sister wasn't so impressed.
What did impress her more is when I informed her I had memorized a full deck of cards in a few minutes and requested to be tested; I asked her for a number and she gave me the "10 of clubs." By number, I meant either 1 to 52, but I rose to the challenge, running quickly mentally through all the images and found the 10 of clubs promptly. It was card # 26.
To conclude, are holidays good for your memory? Well, maybe they are, or maybe not. Strangely, as I tried to recall my deck of cards by listening attentively to what my inner voice would say as I move through my loci, I found that the imagined voices of my relatives would interfere with this process and make the exercise so much more difficult then it can be when I'm away on my own. So a change in settings may not be too bad for one's memory and it can reveal things about your memory that you didn't know.
52 new memories in less than 52 seconds!