Put in 4 1/2 more hours last night on the swing set/fort. Finished up the decking of the fort loft and sundeck. I actually put my 200 lbs. on the deck and heard no cracking noises of note, so it would appear it's relatively sturdy.
The good news is that I'm running out of wood, so I think I'm making good progress. There's still a couple of evenings worth of work, but I think I'm around the halfway point. Tonight, I'll be installing some roofs over the picnic area and upper landing.
In related news, my hamstrings have requested the evening off. I've rejected that request and have told them to expect to work part of the holiday weekend.