Despite the crazy feud between the two, DC tells us he wasn't going to let Jones dictate his weekend -- and instead opted to take his wife and kids to the Magic Kingdom in Anaheim, CA -- 260 miles from the Jones fight in Vegas.
There was a good reason for the trip ... DC's daughter, Marquita, turned 7 years old and the UFC champ wanted to do something special for her birthday.
Of course, while Cormier was enjoying the Happiest Place on Earth, Jones put a beating on Anthony Smith at UFC 235 ... boosting his official record to an impressive 24-1-1.
Jones doesn't acknowledge his 1 loss -- because it was due to a disqualification from an illegal elbow in a fight he was otherwise dominating.
It was almost deja vu for Jones this weekend -- he hit Smith with an illegal knee and was THIIIS close to being DQ'd again ... but Smith took the honorable path out and opted to continue the fight.