Open Question: How far are the 40 person group campsites from the lake at Silverwood Lake?

I am going camping at Silverwood Lake in the Mesa Campground. I want to get the 40-person group campsite, but the map is not clear on how far it is from the lake. What I really want to know is whether or not it is walking distance. Also, are campfires allowed at Silverwood?
For clarification, we are looking at the Miller Canyon Group Campsite 1

Source:
http://answers.yahoo.com/question/index?qid=20110623201520AAkl2tr

disney campground reviews big 5 locations npc campgrounds westwind resort