The last thing you want on Christmas Day is for your kids to be unable to play the game console they’ve waited so long to enjoy. For young kids setting up the console in advance is a sure win. They’re young, they’re super excited to play with their new game console, and they likely don’t care about or even consider the update process. They just want to play with their new toy (and there’s nothing wrong with that).
For older kids the whole process of setting up the console, seeing it update, and, of course, using the voucher codes to select and download the games, is a big part of the process in much the same way that building the gaming PC is a part of the process for many PC gamers.
With that in mind you may consider a sort of compromise when dealing with older kids and the gift of a new game console. If you want your older child to have the experience of unpacking the game console and preparing it themselves (and certainly many gamers young and old would tell you that the unpack/update experience is fun in its own way) you might consider unpacking and updating it with them a few days/weeks in advance so it’s all ready to go but then putting it aside until Christmas. You lose the “Surprise!” factor on Christmas morning but you also get to have a bonding experience with them and the anticipation (and knowledge that console will be ready to go) will definitely keep them excited until Christmas.
Why Do I Want to Do This?