As someone whose team is **ahem** as of this moment still the sitting Club World Champion

I can only tell you to enjoy!
For me these games were always (I say always as if it's a regular occurence and did not just happen twice!

) wonderful, feel-good occasions, for the following reasons:
1) At the latest by November, the fact that you won the Champions League has faded from the system, the new season is a grind, it's unkown what it will bring, and everyone is focused on the week-to-week, only interrupted by obnoxious international breaks
2) At the same time, because of its insignificance to anyone but the participants, the CWC tournament is not on anyone's radar at all. It only enters the horizon at some point, first merely as a perceived nuisance in the league calendar - fans wonder "Eh? What is this? Why are these league games being postponed?"
3) Then you realize that you are, in fact, playing the Club World Cup, because you are actually the reigning Club Champion of Europe! What a great thing to remember!
4) and then, the tournament is just a wonderful thing. It's actually involving the whole globe! The winner is officially the best club in the world! And when else do you actually get to play these wonderful teams, from Africa, from South America, Asia, from Cairo, Casablanca, Rio de Janeiro, Buenos Aires, Tokyo, what have you, in a somewhat competitive setting?
It's something special. You earned it for yourselves, like a nice holiday after a hard year of work.