There is a big USFS campground at the base of the Mendenhall glacier. Turn left off the Mendenhall highway before you get to the visitor center. The campground is on the west and north side of the lake. Beautiful place, lots of campsites, restrooms, etc. I have camped there off season, when it is closed. There is a nice covered shelter there in case the Juneau weather shows itself. Take the bus up there if you want, it goes almost to the campground, and all over downtown too. Catch it at the Nugget mall next to the airport. There is also a campground north of the ferry terminal about a mile. Kind of dark and damp. Like Alaska. Oh, and if you have time, look for my lost wallet, and if you lose yours, I can direct you to the best dumpsters.