They have a few of the volunteers scattered throughout the various camping loops, but most are in a specific area of the campground. We chose a site in the volunteer area, and we like the location.
We like this area. The town of Burnet is 15 minutes away and Marble Falls is 25 minutes away. Teri reports that Marble Falls has the biggest, nicest HEB that she has ever seen, and both towns offer plenty of restaurants which we enjoy. For me, the nearest disc golf course is less than 15 minutes away and there are two others within 25 minutes.
As far as our duties here, we don't know anything yet. Some of the volunteers have let us know that things are very "laid back" here as far as volunteers go. There is no specific schedule of workdays, and it seems like you are expected to track down your own project. Part of the issue is that there is no grass to mow and, relatively few campers this time of year, and so not as many of the usual duties as during the busy spring and summer months.
We hope to meet with the Lead Ranger soon and get started on something. Anything. So stay tuned on that!!