Server overloads occur during a holiday, which revolves around gifts.

Here is the message from Nintendo: This weekend, we’re waiting for an update for the Nintendo Account server, so it could cause something like being unable to create the Nintendo Accounts immediately. We suggest that people who plan to use the Nintendo Switch Family feature for the first time to create their own accounts have their own accounts before. You know what the word’s meaning is. Parents/Siblings/Partners/Families should take holiday Switch games and create accounts/download games before giving them to their loved ones. To keep them clean on Christmas Day, eShop issues can be avoided. If the gamers are not playing the virtual console on Nintendo Switch or plan to try an online game in general, they won’t have to. Then they can wait until the server dies. Hey guys, do you expect a server overload on Christmas? Let’s know your predictions below. [Source]