As insane and as crowded as WDW is that week.Capacity closures are also a possibility..Whether crowds lessen or not after the 1st depends largely on how the holidays fall and school schedules.LAst 2 yrs the crowds did not die off till after Jan 6-7th. This coming year, with New years Day on a Wednesday, many schools are out till the following MOnday the 6th.I would expect heavy crowds till then.July is very busy, but not like Christmas week.