In this song, John is talking about how hard life is usually, but not every day is hard. "its a nice day when you wake up in disneyland" is a metaphore that some days nothing can get you down and you feel like you did as a kid going to disneyland and having a blast all day.
In this song, John is talking about how hard life is usually, but not every day is hard. "its a nice day when you wake up in disneyland" is a metaphore that some days nothing can get you down and you feel like you did as a kid going to disneyland and having a blast all day.