About the single rider line, I waited 35 minutes and still didn't get on cause I had to get changed for work. I've seen groups of 8 waiting to ride. I don't know why they just didn't wait in the regular queue. Oy!
I like to tell guests to go eat at the Plaza Inn around 8:30-9pm, so they can see the fireworks while eating dinner. It's not a bad view from the PI!