this past 4th of July. It was great. Booked a studio at OKW probably 4 or 5 months out. The parks weren't really crowded, although that was probably due to the economy. I also didn't think it was really hot, but I live outside Washington DC so I'm used to heat and humidity. I thought it was great. May do it again this year as I have the 4th and the 5th off.