I find service can be slow at park open/close times. And that means any park... if they have to pull extra busses @ 5p for AK closing, that is fewer for other resorts/parks. I also think mid-day when people have gotten where they are going they are going for the daytime hours they scale back the # of busses. If you only have a handful of people traveling in a given hour, you don't need as many busses but the wait between gets longer. I can't tell you how many times we've been the only 2 people on a bus during those lull times of day.