Vivian,
I know what you are talking about, and while many confuse this with the talking tree in the now-closed Pocahontas show, Wes is a palm tree that moved around the park, interacting with guests. He was, for a simple comparison, a tree cousin of PUSH from Tomorrowland in the Magic Kingdom.
Unfortunately while PUSH has continued to be a popular visitor in the Magic Kingdom, going so far as to have an
iPhone case made in his likeness, Wes Palm appears to have headed off and planted himself somewhere in the sunset.
So no Wes, but if you have never chatted with PUSH, I would suggest you hang out near the restrooms just around the corner from Stitch's Great Escape to see if he is around. He is very funny, and a wonderful distraction.
Have a magical vacation!