Being your first trip, anything you do will be special. Some of my families favorites include, going to Beaches and Cream for an ice cream lunch of the Kitchen Sink (it will be hard for 3 of you to finish, but still would be fun to try!) Any character meals, our favorite is Chef Mickey's. Eating something small at every country, or buying a food item from each contry to bring home to enjoy when you get home. Going to Goofy's Candy Shop to make a chocolaty creation. Take a day off here and there to enjoy the pool and rest up for the next day. So, those are a few tips, most of all, just enjoy the moment. Many people go to Disney and feel like they need to see it all, and you just can't. We go, knowing we won't see it all, but with a plan of just enjoying what we can. I'd rather enjoy half of it fully, then all of it miserably!
Oh, and take lots of photos!!!!!!