I cannot reserve a camping spot in the Overnight Astronomy Observation Field because everything is booked up. Is the only other option to visit the Night Sky Public Viewing Area? Is the public viewing area still worth it?

It's amazing an yes basically the same just different sides of the street. I just went 2 weeks ago. You can try to get an actual camp site too. They are all within walking distance of the sky viewing areas. Over night camp sites are $15. Most are on top of each other. Best site if possible is the last site #1. It is surrounded by the most trees. It looks like site 2 is used for the park to put wood that is free to use for fires.

Yeah, it's the same thing basically. You just cannot stay overnight