Disney what weekday?
 

We are going to Disney World for one day between March 22. and 29.(Easter)
Should we avoid the Easter weekend, or is it packed no matter what weekday we choose? (What days are public holidays in the US?)

I would definately avoid Easter weekend as it will be packed-often the parks shut down on holidays so you may not even get in. No matter what days you go you are going to run into bigger than normal crowds as that is Spring Break season but avoid Good Friday through Easter itself.

I have been to WDW twice during the week before Easter. The closer it gets to Easter, the more crowded the parks become. Get in everything you want to do early in the week. The good news is, the parks are open late.

If you do go, avail yourself of the FastPass system whenever possible. It is mind boggling that some people will wait in line 30 to 40 minutes when they have the option to simply come back at a set time and walk to the front of the line.

If the park is crowded and you plan on staying until it closes to see the fireworks, you just might want to be aware that the trams heading park to the parking areas are likely to be very crowded. If you've got small children, just recognize that you might be waiting 30 or 40 minutes for a tram and plan accordingly.

Also decide which of the parks you will do and pick the day accordingly. Each day of the week has different parks that are more busy than others.
The unofficial guide lists each day of the year with the bests parks to go to. I would also suggest visiting www.disboards.com
They have a very good forum over there with knowledge of ALL things Disney. Have a good trip.

We've had good luck in Orlando on Tuesdays.