We've been there during the past 6 years and will be there 3/22 - 4/1 in 2013. Spring Break is CROWDED, though not as crowded as Christmas week, IMO. You'll see waits of generally 120+ minutes on the most popular rides most of the day. As you can see the crowds don't deter us.... Just go early in the AM, then head back for a rest/swim in the afternoon.........