That was pretty much my plan as well -- hit Raptor at the beginning of the ERT, and MF later.
Craig -- my comment was just that even during the ERT, the park will be fairly "crowded". ONLY the ERT rides will be running during those times, so the CoasterMania attendees will all be in those lines, resulting in a wait anyway.
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--Greg
http://www.pobox.com/~gregleg/