Hi and welcome!!!
Our trip last year was 19 years after the one that preceeded it. I was amazed at all that had changed!!!
Where are you thinking of staying?
One of the biggest differences I noticed (OK, aside from the parks they had added in the 2 decades we skipped) was the necessity for Advanced Dining Reservations for restaurants. At the present time, they can be made 90 days in advance. I don't know whether or not you're considering the meal plan (we love it) but either way, take a look at a character meal or two-- maybe Chef Mickey's for a starter?
And I imagine it must be incredibly expensive to travel so far, but if you can manage to stay on the monorail you'll be just minutes from the Magic Kingdom.