The only coaster's open during the Friday HalloWeekend sessions last year were the Raptor, Iron Dragon, Wildcat, Mantis, and The Mine Ride. Power Tower, Demon Drop, as well as some other milder rides were open as well.
When I was there last year, all of the coasters, except the Wildcat were walk-on's. That is unless you had a front seat preference for the Raptor or the Mantis. Power Tower was nearly a walk-on until they shut down one Space Shot and one Turbo Drop because of lack of attendance. The Raptor and Mantis were running with only two trains each. It's so enjoyable to hit the Mantis brake run at the end of the ride without coming to a complete and sudden halt as you do when they are running all three trains.
*** This post was edited by Raptor0137 on 4/15/2000. ***