Our family, which includes two small children, will most likely travel next April or May. I've heard of Grad Nights--that the MK closes early, lots of teens are bussed in--but I'm wondering if they pose much of an inconvenience outside of the Magic Kingdom. So, for anyone who might know, please tell me if these two weekends are ones to avoid or if it's not a big deal. Are MK area resorts affected? Are crowd levels at other parks affected?