Fantasmic, Illuminations, and Wishes are the nighttime shows at MGM, Epcot, and MK respectively. They are included in admission as are the parades at MGM, AK, and MK (no parade currently at Epcot). Special events at MK including Mickey's Very Special Christmas Party, Mickey's Not So Scary Halloween Party, and the Pirate & Princess Party require separate tickets. So do the shows like the luau at the Poly and Hoop De Doo at Ft. Wilderness. Whether or not they are worth going to depends on preference. We didn't do any shows our last visit, just because we were ready to crash by the end of the day. We saw one parade (at AK) because I wanted to, my kids weren't all that excited about the parades.