1. Make Peace with Your Short Visit
You can't do it all. Say it again, you can't do it all. Even on a week-long Disney vacation you can't do everything, so this is especially true of a trip of only a day or two. There will be some things you wanted to see or ride that just aren't going to happen. Plan a fun visit for your short trip and be excited by the possibility of returning another day to see and do more of the incredible things at Walt Disney World.
While a long visit to Walt Disney World gives you the chance to experience so much of the wonder and magic, don't skip a visit just because you're short on time. You can still have a wonderful trip to Disney, even if it's only for a day. But be careful, after a short trip you're probably going to end up planning a much longer visit for the future!