We took our boys for the first time when they were 2 1/2 years old. It was the best trip we've ever taken. Every single thing was magical to them, and it was so much fun to see their faces light up over it all.
We stayed at AS Movies resort, and used the bus transportation. The kids enjoyed the bus ride as much as the attractions in the parks! We also used 2 umbrella strollers instead of a double. We just find it's easier to get around in the parks with the singles, especially when it's more crowded.
We stuck to their usual schedule for naps and bedtime, and I brought snacks and juice with me into the parks. I used the freebie diaper bag I got from the hospital for diapers, wipes, snacks, old change of clothing---and left it with the strollers when we went into the attractions. This way, if someone stole it, I didn't really lose much.
About the characters---my boys were afraid of the characters until the very last day. They were happy and excited as long as they could watch the characters from a distance, but as soon as any approached them, they started crying. The last night we had an ADR character meal, and they completely warmed up to the characters at Garden Grill. I think maybe because it was a more quiet restaurant, and the characters were able to take a little more time with them there.
About the 3-D movies, Fantasmic---these are very LOUD. If you have a child who is sensitive to noise, you may have issues. One of our boys would not sit through the 3-D movies, while the other loved them. So, I usually sat outside on a bench or walked around with one, while dh went into the 3-D movie with the other. It was actually kinda nice to have one-on-one time with one of them. We had to completely ditch Fantasmic - the darkness combined with the loud sounds was too overwhelming for them.
Tip---eat lunch and dinner at early times so you don't have as long a wait. We usually eat lunch around 11:00-11:15am, before the long lines start to form. We usually try to sit for dinner before 5:30pm as well to avoid longer waits.
This can really be the most fun you've ever had, but you have to go into it knowing you will not see every single thing you want to see, and that you'll have to let the children guide you as to when they need some down-time. As long as you stick to their usual schedule of sleeping/eating - you'll be fine. And know that they are bound to have a tantrum at some point...just about every kid who goes to WDW does...don't sweat it. it usually happens when they are tired or over-stimulated. we've all been there.
Have fun!!!
