It seemed pretty crowded last 4th of July. Lines for the Villain reached about 45 minutes, Superman's lines went through that hill right before the turn into the station, Batman's queue was filled (but, it will go faster now that they have been running 3 trains), and it's safe to say the other coasters were about a 15-45 minute wait. X-Flight's line will most likely reach a 2 hour mark.
Although it was crowded, the WL side may spread customers out more, and since they have fireworks, it is a great experience... even if it is crowded! I may be heading up as well on the 4th.
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Chris B.
http://sfwoa.tripod.com/ Radioheader08@netscape.net