I took the adivce and checked on deltas site and my flight number for arrival at MCO has changed. My departure time has also changed by 30 mins later for our flight leaving home. Do I need to call and notify ME about the new arrival number? I don't want to have a big mix up. As it looks we are getting in still the same time into mco, just the departure from home and connecting flight times have changed a slight bit. Also should I wait till closer to our departure day to notify ME as it could change again? Thank you for your help. 
