This is 'Our Week', we've to WDW 10 times that week since 1999, most trips were 8 days, one was 11. Generally great weather, highs usually from the mid 70s to low 80s, a few times in the 60s but too few to worry about. March has the 3rd lowest rainfall of any month in Orlando. Crowds? Moderate at worst, get to your early park at RopeDrop, use FastPass and you'll do fine. We hop to WS around 1 pm every day. It is my university's Spring Break, but most schools do it later. The ESPN Weekend used to add to crowds a little, that's gone now and Flower and Garden only affects WS, and that very little. See ya there.
Bill From PA