Can 2 Adults (21yrs) do Disney World in 3 Days?

When we went with our family of six this past summer to Disney World, we covered the all the parks and attractions in about five days. Then again, two 21 year olds could do it in three days, we had five kids and two adults which made things a bit more difficult; But the two of you definetly could, just be sure to get fast pes and get there early lol.