Just go and have a great time. We have been 30+ times and always have a great time. Yes, things change in the parks but so do things in real life. Think of the new things they have added in the past few years. Toy Story Mania, Castle Lights etc. Updates to Haunted Mansion, Space Mt. Spaceship Earth etc. We always enjoy eating at some of our favorite restaurant like California Grill, Jiko, Le Cellier etc. So just go and have fun.