Mission Space and Test Track are both open on Wednesday's Early entry morning. Both attractions run from park open til park close (they are in Future World but do not close with the other Future World attractions.) They both close at park closing so yes and no about the Illuminations question. No they are not "open" during Illuminations but yes they will still be running for those people that were already in line...being that Illuminations is at park closing. Currently the park is not busy so FP is avaliable pretty late into the night, but when the attendance is up Yes, they both run out of FP fairly early in the day.