Hi Tejal!
That's a tough one. All the character meals are heavily tailored to children, or at best, most families at character meals have little one's. But in addition to the experience, I always feel character meals are a great chance to get up and close pictures with the characters you love! In that sense, I would consider Chef Mickey's at the Contemporary Resort or the Tusker House Breakfast at Animal Kingdom. Both feature Disney's iconic characters Mickey, Minnie, Goofy, Donald, and Pluto, and everyone wants a photo-op with these Original "American Idols." :-)
But outside of the character meals, Disney's Dinner Shows are great experiences for all ages and something you may also enjoy. My personal favorite is the Hoop-Dee-Doo Musical Revue, a western inspired show filled with funny skits and good food. Or you can try the Spirit of Aloha (a luau) or Mickey's Backyard BBQ, which I have yet to attend but a number of people have said they've thoroughly enjoyed.
For more details on Dinner Shows, click on the Dining link here, then on the left under "Dining Experience," click on Dinner Show.
Good luck on all your Disney planning!