on behalf of your gift-giving loved ones,

I do earnestly beseech and entreat you to refrain from making purchases for yourself within a couple of weeks of Christmas.

And five days before Christmas? Definitely not then.

Keep in mind as well that if the item is particularly sought after, and it is known that you would welcome the item with great delight, what would have been a fantastic surprise for you might then well be ruined. And certain parties' effort that went into procuring said surprise might then be all for naught.

And when you are told expressly not to buy a particular item? DO NOT BUY IT. It's just possible the person who said that might have had an excellent reason for doing so.