Unless you like standing in line and found a silly little game to go with the boredom
of it all or choking in the heat and the crush of people, then by all means, visit Disney World on a Holiday. Now, if you can help it, go on ordinary days and note that Tuesday, Wednesday and Thursday are least busy and crowded. Among these weekdays, Saturdays are filled nearly to capacity. Another reason why regular weekdays are better is because the hotels charge less - basic law of demand and supply. Anyway, you will still get to see your favorite shows and go on those exciting rides. If you can help it, do so.