Yes! There's individual camping at Spruces, as well as a couple groupsites for overnight camping. They typically operate on a first come, first serve basis so be sure to check the website and see how early you can book them. https://www.recreation.gov/camping/campgrounds/232103
Unfortunately, no dogs are allowed up either Big or Little Cottonwood Canyon. It is a watershed for Salt Lake City and they strictly enforce this rule. We know, we wish we could have them celebrating with us too!
We would love to have some help over the weekend, but we do not expect it at all! We will be setting up the ceremony space the day before and will need to tear it down after the reception ends.
As much as we would love to have everyone join us in the mountains of Utah, we understand how resource and time consuming it can be to attend a destination wedding. We are planning on holding a ceremony back on the East Coast for friends and family who are unable to make the trek west. More info to follow!