We are planning our first Universal trip in early November. We think 4 days in the parks ought to be enough, especially since we're staying onsite. We can go to the parks Monday Nov. 7 to Thursday Nov. 10 or Tuesday Nov. 8 to Friday Nov. 11. Until a few nights ago, I had no idea about the whole Harry Potter weekend thing. Should the crowds be relatively light, especially if we go 11/7 to 11/10?